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Mars may once have hosted a warm, ocean-bearing environment, according to new data collected by a rover that explored an area believed to be an ancient shoreline.&nbsp;



The evidence points to buried “beach” deposits, shaped by waves over a long period - highlighting the possibility of large bodies of liquid water in the planet’s distant past.



<h2 class="wp-block-heading" id="h-looking-beneath-the-surface">Looking beneath the surface</h2>



The findings come from the Chinese Zhurong rover, which landed in Utopia Planitia in May 2021 and operated for about one year. Using ground penetrating radar (GPR), the rover investigated up to 80 meters (260 feet) below the red planet’s surface.&nbsp;



Throughout its 1.9-kilometer (1.2-mile) traverse, Zhurong’s radar detected thick, sloping layers consistent with material deposited along a beach - where waves carry sediment upslope at a relatively uniform angle.



“The structures don’t look like sand dunes. They don’t look like an impact crater. They don’t look like lava flows. That’s when we started thinking about <a href="https://www.earth.com/news/new-evidence-suggests-that-mars-had-a-massive-ocean/" target="_blank" rel="noreferrer noopener">oceans</a>,” said Michael Manga, a professor of earth and planetary science at the <a href="https://www.berkeley.edu/" target="_blank" rel="noreferrer noopener">University of California, Berkeley</a>.&nbsp;



“The orientation of these features are parallel to what the old shoreline would have been. They have both the right orientation and the right slope to support the idea that there was an ocean for a long period of time to accumulate the sand-like beach.”



These layered deposits, described in a paper published in the journal <a href="http://dx.doi.org/10.1073/pnas.2422213122" target="_blank" rel="noreferrer noopener">Proceedings of the National Academy of Sciences</a>, fit the scenario of wave-driven accumulation of sand.&nbsp;



On Earth, similarly thick beach sediments form over millions of years, suggesting that the Martian ocean - if it existed - must have persisted for quite some time.&nbsp;



Furthermore, the radar indicates that these layers are composed of sand-sized particles rather than fine dust or coarser rock fragments, which also supports their interpretation as ancient beach deposits rather than wind-blown dunes.



<h2 class="wp-block-heading" id="h-implications-of-beaches-on-mars">Implications of beaches on Mars</h2>



“This strengthens the case for past habitability in this region on Mars,” said Hai Liu, a professor with the School of Civil Engineering and Transportation at <a href="https://english.gzhu.edu.cn/" target="_blank" rel="noreferrer noopener">Guangzhou University</a>, who is part of the Tianwen-1 science team that managed Zhurong. 



Other co-authors note that the presence of ancient beaches on Mars implies that rivers once carried sediment into an open body of water, and that liquid water - free of ice - existed there. 



“Shorelines are great locations to look for evidence of past life. It’s thought that the earliest life on Earth began at locations like this, near the interface of air and shallow water,” added Benjamin Cardenas, an assistant professor of geosciences at the <a href="https://www.psu.edu/" target="_blank" rel="noreferrer noopener">Pennsylvania State University</a>.



Mars is now cold and dry, with a thin <a href="https://www.earth.com/news/is-mars-missing-atmosphere-hiding-in-plain-sight/" target="_blank" rel="noreferrer noopener">atmosphere</a> that makes stable liquid water unlikely on the surface. However, numerous studies indicate that the planet once had a denser atmosphere capable of supporting liquid water on a large scale.&nbsp;



While some of that water likely escaped to space over billions of years, the rest may remain frozen beneath the Martian surface or locked in mineral formations.



<h2 class="wp-block-heading" id="h-the-shoreline-controversy">The shoreline controversy</h2>



For decades, planetary scientists have debated whether a massive ocean once occupied Mars’ northern lowlands. Images from <a href="https://www.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>’s Viking orbiters in the 1970s showed what looked like a shoreline wrapping around much of the northern hemisphere.&nbsp;



Yet the proposed shoreline appeared far from level, varying in altitude by up to 10 kilometers - something that doesn’t match the relatively flat shorelines found on Earth.



One proposed solution is that volcanic activity reshaped Mars’ spin axis and topography long after an ocean had formed.&nbsp;



“Because the spin axis of Mars has changed, the shape of Mars has changed. And so what used to be flat is no longer flat,” Manga explained.&nbsp;



The study suggests that the Tharsis volcanic region - home to the solar system’s largest volcanoes - altered the planet’s rotation while forming, resulting in warped elevation levels. These dynamic processes may have distorted any once-level shoreline.



<h2 class="wp-block-heading" id="h-beaches-buried-on-mars">Beaches buried on Mars</h2>



Zhurong’s Rover Penetrating Radar (RoPeR) has offered a fresh perspective by detecting features hidden beneath the surface, where they have remained relatively untouched by eons of erosion or <a href="https://www.earth.com/news/climate-chaos-how-an-asteroid-strike-would-change-life-on-earth/" target="_blank" rel="noreferrer noopener">asteroid impacts</a>.&nbsp;



“The sand that’s on those beaches is coming in from the rivers, and then it’s being transported by currents in the ocean and continually being transported up and down the beaches by the waves,” Manga said.&nbsp;



In other words, the rover uncovered structures one would expect to find along a coastline, still preserved after billions of years.



Overlying the beach deposits are around 10 meters (30 feet) of later material, likely derived from dust storms, volcanic ash, and debris from meteorite impacts.&nbsp;



This overburden fortuitously kept the beach layers intact, preventing weathering or erosional processes from completely removing the evidence of ancient shorelines.



<h2 class="wp-block-heading" id="h-mystery-of-water-on-mars-nbsp">Mystery of water on Mars&nbsp;</h2>



Zhurong’s discovery aligns with other indications of past water on Mars. NASA’s Curiosity rover found sedimentary “wave ripples” in Gale Crater, suggesting an ancient lake free of ice, while the Perseverance rover revealed a fossilized river delta in <a href="https://www.earth.com/news/lake-sediments-found-in-jezero-crater-hint-at-past-life-on-mars/" target="_blank" rel="noreferrer noopener">Jezero Crater</a>. Yet these findings pointed to lakes, not seas.&nbsp;



Zhurong’s data, by contrast, offers a vision of a far more expansive body of water - a genuine ocean or sea.



“To make ripples by waves, you need to have an ice-free lake. Now we’re saying we have an ice-free ocean. And rather than ripples, we’re seeing beaches,” Manga said, highlighting the difference in scale.



Though Zhurong is no longer active, the results of its one-year mission add compelling new evidence to the idea that Mars was once home to a significant ocean - complete with beaches shaped by waves. 



Future missions that explore these buried shoreline deposits may shed even more light on how Mars transitioned from a <a href="https://www.earth.com/news/mars-captured-in-true-color-like-youve-never-seen-the-red-planet-before/" target="_blank" rel="noreferrer noopener">planet</a> with long-lived bodies of water to the arid world we know today.



Image Credit: Robert Citron



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Evidence of ancient ‘beaches’ found buried on Mars

Mars may once have hosted a warm, ocean-bearing environment, according...

Severe weather events have become more frequent and intense globally, threatening public health significantly. Of these events, heatwaves are particularly notable for their silent but lethal effects. 



Heatwaves are frequently underestimated in comparison to events that are more obviously destructive, such as hurricanes or floods.



A recent study from <a href="https://www.uq.edu.au/" target="_blank" rel="noreferrer noopener">The University of Queensland</a> has revealed dire trends. The researchers investigated increased exposure to heat, particularly in urban settings, as a result of the exacerbating effects of <a href="https://www.earth.com/news/astonishing-global-heat-in-january-2025-defied-climate-expectations/" target="_blank" rel="noreferrer noopener">climate change</a>.



<h2 class="wp-block-heading" id="h-heatwave-mortality-in-a-hotter-climate">Heatwave mortality in a hotter climate</h2>



Heat-related deaths are a rising issue globally, and <a href="https://www.earth.com/news/climate-change-earth-energy-imbalance-temperature-rise/" target="_blank" rel="noreferrer noopener">climate</a> change is a major contributing factor.



The Queensland study confirms that human-driven climate change has increased heatwave deaths by 20 percent. The findings highlight the critical need to be more proactive about addressing climate-related health threats.



Professor Nicholas Osborne, an associate in UQ School of Public Health, emphasized the value of preparedness.



"Our results suggest heatwaves with associated periods of higher mortality will occur more often than they did in the past," said Professor Osborne.



"These higher mortality rates associated with extreme temperature heatwaves are projected to continue, and we hope our research will help communities be better prepared for heatwaves."



<h2 class="wp-block-heading" id="h-cities-face-highest-heatwave-risks">Cities face highest heatwave risks</h2>



Urban areas are particularly at risk from heatwaves due to high population densities and large infrastructure like roads, buildings, and transport systems.



The UQ team examined 20 years of information on <a href="https://www.earth.com/news/extreme-heat-is-pushing-parts-of-earth-beyond-human-survival/" target="_blank" rel="noreferrer noopener">temperature</a> and death rates throughout Australia, using the internationally accepted Heatwave Vulnerability Index.



Study lead author Patrick Amoatey said city dwellers are considerably more at risk when there is severe heat.



"We used an index mapping tool to assess how human populations will fare under a range of heat scenarios," related Amoatey. "We found the Heatwave Vulnerability Index, frequently used in other countries, could reliably predict heatwave-related deaths in Australia."



<h2 class="wp-block-heading" id="h-who-is-most-vulnerable">Who is most vulnerable?</h2>



Based on a detailed data analysis of over 2,000 suburbs, the researchers were able to identify certain factors that greatly elevated vulnerability.



Urban dwellers with lower incomes, less education, diabetes, and limited healthcare access were especially vulnerable to heat surges.



Australia's capital cities, which are home to about 70% of the country's population, have a high concentration of residents with these risk factors. 



<h2 class="wp-block-heading" id="h-recognizing-the-heat-island-effect">Recognizing the heat island effect</h2>



One major contributor to increased risks in urban centers is the "heat island effect," in which cities store and absorb heat more than outlying or rural areas. 



"We believe the risk is higher in cities because of the 'heat island effect,' as there are more heat-absorbing surfaces like roads, buildings, and railway lines," said Amoatey.



The heat island effect intensifies temperature extremes and significantly affects residents' health during heatwaves. Understanding this effect is crucial for urban planning and developing strategies to prevent heat-related fatalities.



<h2 class="wp-block-heading" id="h-global-heatwave-responses">Global heatwave responses</h2>



Amoatey emphasized the successful implementation of the Heatwave Vulnerability Index. In London, the index effectively predicted increases in ambulance calls and death rates during heat surges.



"This is helpful for health authorities and something we could use in Australia," said Amoatey. 



Incorporating the heatwave index into current frameworks would substantially improve community preparedness and resilience, while delivering real-time intelligence to health authorities.



<h2 class="wp-block-heading" id="h-impact-of-climate-change-in-australia">Impact of climate change in Australia</h2>



A study by UQ and <a href="https://www.anu.edu.au" target="_blank" rel="noreferrer noopener">Australian National University</a> researchers found a link between climate change and deaths during the 2009 heatwave in southeastern Australia.



The disaster was estimated to have caused 374 excess fatalities as temperatures hit a record 12-15 degrees above the average. 



"Human-induced climate change had increased the excess heatwave-related mortality in the 2009 event by 20%. These findings were in line with other research that shows heat-related deaths are increasing due to human-induced climate change," Dr. Osborne noted.



<h2 class="wp-block-heading" id="h-preparedness-for-future-events">Preparedness for future events</h2>



In light of these alarming <a href="https://www.earth.com/news/mapping-marine-heatwaves-to-understand-their-impacts/" target="_blank" rel="noreferrer noopener">trends</a>, experts call for urgent health infrastructure and workforce preparedness. 



"From a public health perspective, our studies and further research can provide guidance on the need for adequate health infrastructure and workforce that might be needed to cope with higher demand for health services during heatwaves," said Dr. Osborne. 



Preparation could greatly lower future mortality rates and enhance community resilience against unavoidable climate-related issues in the future.



The Heatwave Vulnerability Index study appears in <a href="https://www.sciencedirect.com/science/article/pii/S0195925525000095?via%3Dihub" target="_blank" rel="noreferrer noopener">Environmental Impact Assessment Review</a>, while the climate change and mortality study is published in <a href="https://iopscience.iop.org/article/10.1088/2752-5295/ada8cd" target="_blank" rel="noreferrer noopener">Environmental Research: Climate</a>.



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Climate change has made heatwaves more deadly

Severe weather events have become more frequent and intense globally,...

In many parts of the world, people are too poor to afford energy options such as gas or electricity. In addition, the supply of more conventional fuels, such as wood, may be insufficient for the population size. 



People in this position are increasingly turning to plastics to provide energy for heating and cooking. This dangerous practice has the potential to hurt millions due to the effects of toxic emissions on health.



Growing urban populations make energy demands higher, but policies in support of cheap, cleaner fuel alternatives also fall short of requirements, particularly in developing countries.



In densely populated areas of Africa, Asia, and Latin America, scientists have charted patterns of energy consumption. The information indicates an alarming trend - a significant majority of the population is unable to pay for clean energy options. 



With few choices, many families turn to whatever combustible material is available, which further reinforces the cycle of pollution and illness.



<h2 class="wp-block-heading" id="h-urbanization-fuels-the-crisis">Urbanization fuels the crisis</h2>



The rapid expansion of urban areas in developing nations has exacerbated the plastic-burning crisis. 



Traditional fuels such as wood and charcoal, once readily available in rural settings, have become increasingly scarce within sprawling cities. 



Meanwhile, inadequate waste management has led to a surplus of plastic waste which is seen as a readily accessible - albeit hazardous - fuel source.



A new study led by researchers at <a href="https://www.curtin.edu.au/" target="_blank" rel="noreferrer noopener">Curtin University</a> highlights the growing severity of this issue. The experts are calling for urgent action to curb the use of plastic for fuel.



<h2 class="wp-block-heading" id="h-health-risks-of-burning-plastic">Health risks of burning plastic </h2>



Lead researcher Dr. Bishal Bharadwaj warns that burning plastic exposes millions to toxic emissions, which can have severe health consequences.



“Burning plastic releases harmful chemicals such as dioxins, furans and heavy metals into the air, which can have a range of health and welfare impacts such as <a href="https://www.earth.com/news/low-levels-of-air-pollution-increase-the-risk-of-heart-and-lung-disease/" target="_blank" rel="noreferrer noopener">lung diseases</a>,” noted Dr. Bharadwaj.



The risks are particularly severe for women and children, who spend more time indoors and are thus more exposed to airborne pollutants. However, the consequences are far-reaching and can affect entire neighborhoods and cities.



The research highlights the scale of the problem, and reveals alarming statistics from different regions.



“In a survey, 13 percent of Nigerian households reported using garbage as a cooking fuel, while soil and food samples in Indonesia have revealed dangerous toxin levels linked to burning plastic,” said Dr. Bharadwaj.



<h2 class="wp-block-heading" id="h-trends-in-plastic-consumption">Trends in plastic consumption </h2>



This issue is all the more distressing since it affects millions of people who already struggle with the effects of poverty and inequality. 



Furthermore, trends predict an exponential growth in <a href="https://www.earth.com/news/new-disease-found-in-seabirds-is-caused-by-plastic-consumption/" target="_blank" rel="noreferrer noopener">plastic consumption</a> and urban population sizes.



“By 2050, two-thirds of the world’s population will live in urban areas and many cities already struggle to provide basic services such as <a href="https://www.earth.com/news/international-day-of-zero-waste-a-global-commitment-to-a-sustainable-future/" target="_blank" rel="noreferrer noopener">waste collection</a>," explained Dr. Bharadwaj. 



"This will be a growing problem, given global plastic consumption is expected to triple by 2060 and inequality will deepen with rapid, unmanaged urbanisation in developing countries.”



<h2 class="wp-block-heading" id="h-addressing-the-issue-effectively">Addressing the issue effectively</h2>



According to Professor Peta Ashworth, solving this crisis will require a multi-pronged approach.



Effective government intervention is essential, but current policies often do not take into account the needs of the communities most affected by plastic burning. 



“Many governments are not addressing the issue effectively because it’s usually concentrated in areas such as slums, which are often neglected. A ban on plastic burning might not help if people have no other option to keep warm and cook their food,” noted Professor Ashworth.



Instead, the study emphasizes the need for practical and inclusive solutions that provide alternative energy options to vulnerable communities.



“Possible ways to address the problem include subsidies for cleaner fuels to make them affordable for poorer families, better waste management to prevent plastic from piling up in slum areas, education campaigns to inform communities about the dangers of burning plastic, and alternative low-cost, innovative <a href="https://www.earth.com/news/clean-cooking-could-save-half-a-million-lives-each-year/" target="_blank" rel="noreferrer noopener">cooking solutions</a> tailored to lower-income areas,” said Professor Ashworth.



As we move forward, it is clear that comprehensive studies and collaborative efforts are essential to grasp the full magnitude of this crisis and develop realistic solutions. 



<h2 class="wp-block-heading" id="h-ripple-effects-of-plastic-burning">Ripple effects of plastic burning</h2>



While the plastic-burning crisis is most prevalent in developing nations, its effects extend far beyond the communities directly involved. 



The toxic <a href="https://www.earth.com/news/microplastics-can-make-other-pollutants-more-toxic/" target="_blank" rel="noreferrer noopener">pollutants</a> released into the air contribute to global atmospheric pollution, which can worsen respiratory diseases and environmental degradation.



International organizations, policymakers, and researchers must work together to develop sustainable, long-term solutions.



Strengthening global waste management policies, investing in alternative energy technologies, and promoting cross-border collaborations will be crucial steps toward mitigating the crisis.



As the world moves toward a more urbanized future, the challenge is clear - without bold, immediate action, millions will continue to suffer from the consequences of this silent crisis.



The full study was published in the journal <a href="https://www.nature.com/articles/s44284-025-00201-5" target="_blank" rel="noreferrer noopener">Nature Cities</a>.



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Burning plastic as fuel for cooking is becoming a big global problem

In many parts of the world, people are too poor...

Understanding the apparent paradox of "stress as a strength" has led to a recent discovery that could well change the way we perceive biological communities and their resilience.



In a world characterized by rapid environmental change, comprehending the complex relationship between genetic diversity and environmental stress is more critical than ever.



The breakthrough challenges conventional views by suggesting that, under certain conditions, <a href="https://www.earth.com/news/some-plants-thrive-under-environmental-stress/" target="_blank" rel="noreferrer noopener">stress</a> may actually drive the adaptive processes essential for survival.



<h2 class="wp-block-heading" id="h-adapting-to-changing-environments">Adapting to changing environments</h2>



A recent study from <a href="https://www.mcgill.ca/desautels/programs/mba-programs/mba?utm_source=google&amp;utm_medium=cpc&amp;utm_campaign=mba_2024-25&amp;utm_content=nb-search-brand&amp;creative=720501009342&amp;keyword=mcgill%20mba&amp;matchtype=b&amp;network=g&amp;device=c&amp;gad_source=1&amp;gclid=Cj0KCQiAq-u9BhCjARIsANLj-s2zcKyoTmLixLDaGTe-hOEDSqn0KcUGuoz5SBQTqcaJKl4gd6N4jPQaApjyEALw_wcB" target="_blank" rel="noreferrer noopener">McGill University</a> has explored the complexities of how natural communities react and adapt to changing environmental scenarios. The research was led by Professor Rowan Barrett and Charles Xu, a recent PhD graduate.



The results indicated that not all stress is harmful. In fact, a moderated level of environmental stress equips these communities with a robust defense mechanism against severe threats.



This newfound understanding may turn out to be a crucial factor in managing <a href="https://www.earth.com/news/global-biodiversity-crisis-is-actually-worse-than-we-thought/" target="_blank" rel="noreferrer noopener">biodiversity</a> amid growing anthropogenic stressors, such as pollution and climate change.



<h2 class="wp-block-heading" id="h-what-is-environmental-stress">What is environmental stress?</h2>



Environmental stress is defined as external forces that disturb the balance of biological processes.



The stressors are either natural in origin - such as high temperatures, droughts, and flooding - or anthropogenic, such as pollution, <a href="https://www.earth.com/news/global-deforestation-crisis-how-can-we-stop-massive-forest-losses/" target="_blank" rel="noreferrer noopener">deforestation</a>, and global warming.



Understanding these environmental stressors is crucial for identifying the challenges an ecosystem faces and developing effective conservation and management strategies to safeguard biodiversity.



<h2 class="wp-block-heading" id="h-simulating-environmental-stress">Simulating environmental stress </h2>



The experiment was conducted at a special site known as the Large Experimental Array of Ponds (LEAP), which is located within the university’s nature reserve.



The team exposed microbial communities to a progressive acidification process, thus emulating the type of environmental stressors found in real-world <a href="https://www.earth.com/news/silent-invasion-how-microplastics-are-disrupting-land-ecosystems/" target="_blank" rel="noreferrer noopener">ecosystems</a>.



The study revealed that prior exposure to mild stressors served as a protective shield against subsequent stress.



Communities previously exposed to low-level stressors demonstrated impressive survival rates, maintaining a diverse pool of species, even under more severe stress conditions.



<h2 class="wp-block-heading" id="h-natural-selection-and-evolutionary-change">Natural selection and evolutionary change </h2>



At the heart of this study lie the processes of <a href="https://www.earth.com/news/lifes-rules-natural-selection-change-significantly-often-daphnia/" target="_blank" rel="noreferrer noopener">natural selection</a> and evolutionary change in freshwater bacterial communities.



Natural selection ensures survival and success of the individuals within a species that are best adapted for a particular environment.



Evolutionary change, on the other hand, involves genetic modifications (over generations) that result in new variants or species that can thrive in their specific habitats.



The scientists used metagenomic analysis to track changes that occurred within the microbial communities.



The findings indicated that the toughest species, the ones that survived the stress, evolved over time to become even stronger against stress.



This dual process guarantees the survival and diversity of the community under conditions of extreme stress.



<h2 class="wp-block-heading" id="h-future-research-directions">Future research directions </h2>



"This research underscores the need to consider both ecological and evolutionary forces when predicting how natural communities will respond to environmental stress," said Barrett.



Incorporating these evolutionary responses into models can significantly improve predictive accuracy concerning changes in biodiversity, and thereby enhance conservation efforts.



With this new knowledge in hand, the research team plans to investigate the long-term evolution of these microbial communities and assess the impact of different environmental stressors on genetic adaptation.



<h2 class="wp-block-heading" id="h-environmental-stress-and-ecosystem-health">Environmental stress and ecosystem health</h2>



The results provide a new perspective on the mechanisms that can lead to ecosystem resilience from environmental stress.



Further research may enhance our knowledge about whether such adaptability is replicated in different types of biological communities and environmental scenarios.



By extending research into such dynamics, researchers will be able to reveal overall principles that inform useful conservation and management strategies.



While the mechanisms behind these adaptive responses continue to be investigated, the study serves as a reminder that not all stress is harmful.



These emerging insights encourage a reevaluation of how stress might be integrated, in a controlled manner, into broader efforts to preserve biodiversity and maintain ecological balance.



The research highlights the potential for leveraging natural adaptive processes to enhance ecosystem health and paves the way for innovative conservation efforts.



The full study was published in the journal <a href="https://linkinghub.elsevier.com/retrieve/pii/S0960982225000673" target="_blank" rel="noreferrer noopener">Current Biology</a>.



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How environmental stress strengthens ecosystems

Understanding the apparent paradox of "stress as a strength" has...

Anxiety is a common mental health disorder that affects millions of people all over the world. It has long been the subject of intense scientific study.



Recently, researchers have stumbled upon an unexpected ally in the fight against this prevalent condition - the humble gut microbe. 



It appears that gut microbes, in their natural habitat, produce compounds known as indoles, which are crucial for regulating the brain activity associated with anxiety.



<h2 class="wp-block-heading" id="h-tiny-microbes-big-impacts">Tiny microbes, big impacts</h2>



The researchers, who were based at <a href="https://www.duke-nus.edu.sg/" target="_blank" rel="noreferrer noopener">Duke-NUS Medical School</a> and the National Neuroscience Institute, set out to investigate the role that gut microbes play in regulating anxious behavior.



The findings are truly eye-opening. Not only do <a href="https://www.earth.com/news/gut-microbes-affect-how-we-handle-everyday-stress/" target="_blank" rel="noreferrer noopener">microbes in the gut</a> influence brain activity, they may also hold the key to potential treatments for mental health issues such as anxiety and depression.



<h2 class="wp-block-heading" id="h-gut-microbes-and-anxiety">Gut microbes and anxiety </h2>



<a href="https://www.earth.com/news/151-million-americans-have-mental-health-disorders-linked-to-leaded-gasoline/" target="_blank" rel="noreferrer noopener">Mental health disorders</a> are becoming increasingly prevalent in today's world. In Singapore, for instance, 1 in 7 people has experienced a mental health issue.



The most common conditions include <a href="https://www.earth.com/news/confirmed-magic-mushrooms-can-effectively-treat-depression/" target="_blank" rel="noreferrer noopener">depression</a> and anxiety, which contribute significantly to the disease burden in many countries.



The research team set out to explore how the presence of microbes affects the anxious behavior of mice.



In germ-free mice that had not been exposed to any living microbes, observable anxiety-related behavior increased significantly compared to the behavior of mice that had been exposed to microbes.



<h2 class="wp-block-heading" id="h-from-the-gut-to-the-brain">From the gut to the brain</h2>



Upon further study, the researchers linked this increased anxiety to heightened activity in the basolateral <a href="https://www.earth.com/news/where-do-fear-and-anxiety-reside-in-the-brain-new-cells-identified/" target="_blank" rel="noreferrer noopener">amygdala</a> (BLA) - a part of the brain responsible for processing emotions such as fear and anxiety.



More specifically, the team identified the role of specialized proteins within brain cells, referred to as calcium-dependent SK2 channels, which regulate anxiety behavior.



"Our findings reveal the specific and intricate neural process that links microbes to mental health," said co-lead author Professor Shawn Je.



"Those without any live microbes showed higher levels of anxious behavior than those with live bacteria. Essentially, the lack of these microbes disrupted the way their brains functioned, particularly in areas that control fear and anxiety, leading to anxious behavior."



<h2 class="wp-block-heading" id="h-gut-microbes-and-mental-balance">Gut microbes and mental balance </h2>



The researchers extended their investigation by introducing live microbes to germ-free mice.



With live microbes reintroduced, the heightened neuronal activity in the basolateral amygdala was significantly reduced, and the rodents showed less anxiety-related behavior.



Additionally, treating these germ-free mice with indoles - metabolites produced by certain microbes - resulted in similar effects, confirming a direct link between the <a href="https://www.earth.com/news/gut-bacteria-have-an-impact-on-brain-health/" target="_blank" rel="noreferrer noopener">gut microbiota</a> and mental balance.



"Establishing hunger signals and controlling hunger is an evolutionarily conserved defense mechanism. The physiological switch at birth, can therefore, be viewed as a first major wave of anxiety exposure for the newborn, which simply says, 'If you don’t eat, you will die,'" explained co-lead author Professor Sven Pettersson.



"Additionally, birth is associated with exposure to breast milk, known to contain microbes that can produce molecules known as indoles." 



"Indoles are known to be secreted in plants when they are exposed to stress or malnutrition (drought) and in this paper we report a similar mechanism in which indoles can regulate anxiety levels in mammals."



<h2 class="wp-block-heading" id="h-a-new-era-of-anxiety-treatments">A new era of anxiety treatments</h2>



This breakthrough suggests that targeting the gut-brain axis could pave the way for new anxiety treatments, either through dietary indole supplementation or introduction of indole-producing microbes as probiotics. 



Professor Patrick Tan, Senior Vice-Dean for Research at Duke-NUS said that the findings underscore the deep evolutionary links between microbes, nutrition, and brain function. 



"This has huge potential for people suffering from stress-related conditions, such as sleep disorders or those unable to tolerate standard psychiatric medications. It’s a reminder that mental health is not just in the brain - it’s in the gut too," said Professor Tan.



Next, the researchers will test their findings in clinical trials and examine the efficacy of indole-based probiotics or supplements as a natural anxiety treatment in humans.



If these trials are successful, we may be on the brink of a new era in mental health care, where gut microbes play a pivotal role in maintaining mental health balance.



The full study was published in the journal <a href="https://www.embopress.org/doi/full/10.1038/s44321-024-00179-y" target="_blank" rel="noreferrer noopener">EMBO Molecular Medicine</a>.



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Gut microbes have an unexpected link to anxiety

Anxiety is a common mental health disorder that affects millions...

Superbugs, or antibiotic-resistant bacteria, are among the most urgent public health dangers of our time. These bacteria mutate to resist even the most powerful antibiotics.



Recently at a hospital in Nevada, a female patient who was admitted with pneumonia died from sepsis and multiple organ failure. The culprit was a bacteria that had adapted to resist as many as 26 different antibiotics.



<h2 class="wp-block-heading" id="h-a-possible-solution">A possible solution </h2>



Taking steps in the fight against these deadly pathogens, researchers at <a href="https://www.tamu.edu/index.html" target="_blank" rel="noreferrer noopener">Texas A&amp;M</a> have discovered something intriguing. 



The experts found that curcumin, the compound that gives <a href="https://www.earth.com/news/turmeric-supplements-provide-yet-another-health-benefit-according-to-study/" target="_blank" rel="noreferrer noopener">turmeric</a> its bright yellow color, may be able to reverse antibiotic resistance.



The study revealed that curcumin, when presented to bacteria as a source of food and then triggered by light, causes destructive reactions within these microbes. These reactions eventually kill the bacteria.



The process effectively reduces the number of <a href="https://www.earth.com/news/scientists-create-viruses-to-combat-antibiotic-resistant-bacteria/" target="_blank" rel="noreferrer noopener">antibiotic-resistant</a> strains, consequently making conventional antibiotics useful again.



<h2 class="wp-block-heading" id="h-the-superbug-era">The superbug era</h2>



Prior to the discovery of <a href="https://www.earth.com/news/antibiotics-for-childhood-infections-are-becoming-ineffective/" target="_blank" rel="noreferrer noopener">antibiotics</a>, infectious diseases were the top cause of death and disability globally. The introduction of these wonder drugs added 23 years to the average human <a href="https://www.earth.com/news/breathing-less-oxygen-could-extend-your-lifespan-by-50-or-more/" target="_blank" rel="noreferrer noopener">lifespan</a>.



While the development of new antibiotics has reached a plateau, resistant bacteria have surged - ushering in the superbug era.



Superbugs include methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus (VRE), and certain drug-resistant strains of pneumonia-causing bacteria - all of which are notoriously difficult to treat.



Dr. Vanderlei Bagnato, a professor in the Department of Biomedical Engineering and the senior author of the study, shared his insights.



“When bacteria start becoming resistant to conventional antibiotics, we have what we call an antibiotic catastrophe," said Dr. Bagnato.



"To overcome this challenge, we need alternative ways to either kill the superbugs or find a novel way to modify natural processes within the bacteria so that antibiotics start to act again." 



<h2 class="wp-block-heading" id="h-battling-the-superbugs">Battling the superbugs</h2>



Natural diversity within a bacterial population results in varied behaviors, including differences in antibiotic resistance. If certain strains can withstand antimicrobial drugs and continue to multiply, this diversity can contribute to increased resistance to treatment.



The primary goal of the Texas A&amp;M study was to control this bacterial diversity to manage resistance.



The research team applied a method known as photodynamic inactivation, which uses light and light-sensitive molecules known as photosensitizers to generate reactive oxygen species. These species can annihilate microorganisms by disrupting their metabolic processes. 



In their experiments, curcumin was used as the photosensitizer. The beauty of this approach is that curcumin also doubles as natural food for bacteria.



The team tested this method on strains of Staphylococcus aureus that are resistant to antibiotics such as amoxicillin, erythromycin, and gentamicin.



The bacteria were subjected to multiple light exposure cycles. The team then compared the minimum antibiotic concentration needed to kill the bacteria following light exposure with those not exposed to light. 



“When we have a mixed population of bacteria where some are resistant, we can use photodynamic inactivation to narrow the bacterial distribution, leaving behind strains that are more or less similar in their response to antibiotics. It’s much easier now to predict the precise antibiotic dose needed to remove the infection,” explained Dr. Bagnato.



<h2 class="wp-block-heading" id="h-the-fight-against-resistance">The fight against resistance</h2>



The researchers are confident that photodynamic inactivation by curcumin would function well as a complement to antibiotics as a treatment for infections that are caused by drug-resistant bacteria.



“Photodynamic inactivation offers a cost-effective treatment option, which is crucial for reducing medical expenses not only in developing countries but also in the United States," said study co-author Dr. Vladislav Yakovlev. 



"It also has potential applications in military medicine, where this technology could be used to treat battlefield wounds and prevent the development and spread of <a href="https://www.earth.com/news/antimicrobial-resistance-projected-to-kill-10-million-people-each-year/" target="_blank" rel="noreferrer noopener">antimicrobial resistance</a>, a significant concern in combat situations."



The results of the study provide renewed hope in the fight against superbugs. By leveraging the potential of a common spice like turmeric, we may gain an advantage in this ongoing battle.



The full study was published in the journal <a href="https://www.nature.com/articles/s41598-024-79743-y" target="_blank" rel="noreferrer noopener">Scientific Reports</a>.



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Just a pinch of this common spice kills superbugs in lab testing

Superbugs, or antibiotic-resistant bacteria, are among the most urgent public...

Birds and feathers are closely tied together - feathers enable flight, provide insulation, and make courtship displays possible. Yet the origin of these remarkable structures predates birds.



Feathered dinosaurs were first reported in the 1990s, but many mysteries remain about how and when feathers emerged. Did all dinosaurs share a feathered ancestor, or did feathers appear multiple times in different lineages?&nbsp;



A new study co-authored by Paul Barrett and Xu Xing from the <a href="https://www.nhm.ac.uk/" target="_blank" rel="noreferrer noopener">Natural History Museum</a> attempts to consolidate the latest knowledge and move us closer to an answer.



<h2 class="wp-block-heading" id="h-feathers-of-the-distant-past">Feathers of the distant past</h2>



Fossil evidence has revealed that <a href="https://www.earth.com/news/modern-bird-feathers-contain-traces-of-dinosaur-feathers/" target="_blank" rel="noreferrer noopener">feathers</a> are not exclusive to modern birds and their immediate relatives. Dinosaurs with feathers existed in the distant past, showing that these structures are much more ancient than once believed.&nbsp;



However, broad questions endure: Are feathers found only in meat-eating <a href="https://www.earth.com/news/large-theropod-dinosaurs-thrived-in-polar-environments/" target="_blank" rel="noreferrer noopener">theropods</a> close to birds, or could they have been more widespread across the dinosaur family tree?



“While dozens of feathered dinosaurs have been identified since Sinosauropteryx was first unveiled in the 1990s, they’re mainly meat-eaters that are close relatives of birds,” Barrett explained. 



“Everyone agrees that these dinosaurs had feathers, but there’s little consensus beyond that.”



“To settle these disagreements, we need more fossils and to define what a feather is. If we can sort this out, it could reveal where feathers first came from and whether they predate the dinosaurs themselves.”



<h2 class="wp-block-heading" id="h-conflicting-theories-on-feather-origins">Conflicting theories on feather origins</h2>



Some scientists propose that feathers originated in a common ancestor of dinosaurs and pterosaurs, suggesting all later descendants inherited the potential to grow feathers - though some lost it over time.&nbsp;



Others argue that pterosaurs did not have true feathers, meaning the structures observed on them might be something else. 



A third viewpoint holds that feathers emerged solely within theropods, the group that includes well-known predators like Velociraptor and <a href="https://www.earth.com/news/t-rex-may-have-had-brains-and-brawn/" target="_blank" rel="noreferrer noopener">Tyrannosaurus</a>.



To resolve these debates, better fossil evidence from earlier time periods is essential. Most known feathered dinosaur fossils date to the Cretaceous, yet feathers may have evolved well before then.&nbsp;



Finding older specimens could clarify whether feathers appeared at the dawn of dinosaur evolution or surfaced in only one branch of the family tree.



<h2 class="wp-block-heading" id="h-did-early-dinosaurs-have-feathers">Did early dinosaurs have feathers?</h2>



Professor Barrett emphasized the importance of discovering prehistoric remains from much earlier geological periods.&nbsp;



“We need to find new sites with fossilized feathers, particularly from the Jurassic and the Triassic,” he said. “The Triassic is especially important, as finding feathered dinosaurs at this early time in dinosaur evolution would suggest that all dinosaurs had an ancestor with feathers.”



“If feathered dinosaurs aren’t found among early <a href="https://www.earth.com/news/dinosaurs-evolved-feathers-for-much-more-than-just-flying/" target="_blank" rel="noreferrer noopener">dinosaurs</a>, then it makes it more likely feathers were an innovation among later groups.”



Such discoveries could shift perceptions of the entire dinosaur lineage. Were feathers a universal trait that some species shed over time, or did they evolve independently in separate groups?



<h2 class="wp-block-heading" id="h-defining-a-true-feather">Defining a "true feather"</h2>



Another challenge paleontologists face involves the definition of a “true feather.” 



Modern bird feathers have distinct chemical and structural characteristics, including growth from a follicle in the skin. Ancient dinosaur feathers may have looked different, reflecting earlier evolutionary stages.



“To identify a true feather from a living bird, we’d look to see what it’s made out of, and its structure,” Barrett explained. “One of the characteristics we have to identify is that the feather grows out of a follicle in the skin.”



“It’s possible, however, that follicles and other modern characteristics might not have been present in all dinosaur feathers. Detailed anatomical work at a microscopic level to compare preserved skin and feathers with examples from living birds could help to resolve this.”



Fossilized skin can also offer important clues. Some specimens display bird-like tissues, hinting that the common ancestor of certain dinosaurs and birds shared these traits.&nbsp;



But other dinosaurs show more reptilian textures, indicating the possibility that feathers evolved separately in multiple lineages.



<h2 class="wp-block-heading" id="h-unraveling-the-history-of-feathers">Unraveling the history of feathers</h2>



For the moment, experts remain divided on how feathers took hold in dinosaur evolution. The challenge lies in discovering enough well-preserved fossils from the right time periods and reaching a clear consensus on what counts as a feather.&nbsp;



From tantalizing glimpses in existing fossils to ongoing searches in promising new sites, researchers continue to piece together this ancient puzzle.



Ultimately, answers about the origins of feathers may transform how scientists understand dinosaur evolution - and the emergence of <a href="https://www.earth.com/news/bird-evolution-timeline-pushed-back-20-million-years-by-baminornis-zhenghensis-discovery/" target="_blank" rel="noreferrer noopener">birds</a>.&nbsp;



Until then, paleontologists will continue to search the world for the fossils which can finally settle this decades-old debate. 



Each new find has the potential to reshape our perception of the prehistoric world and the ancestors of the birds we see in our skies today.



The study is published in the journal <a href="https://dx.doi.org/10.1098/rsbl.2024.0517" target="_blank" rel="noreferrer noopener">Biology Letters</a>.



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From dinosaurs to birds, the origin of feathers remains a mystery

Birds and feathers are closely tied together - feathers enable...

The Amazon rainforest, known as "the lungs of the Earth," faces continuous threats from deforestation. 



The Amazon's unique biodiversity, extensive carbon storage capabilities, and significant role in regulating the Earth's climate highlight the urgent need to fully understand the consequences of deforestation.



Scientists, activists, and global citizens have been increasingly concerned about changes in rainfall patterns. However, emerging research challenges previously held assumptions about rainfall <a href="https://www.earth.com/news/the-amazon-rainforest-is-approaching-widespread-collapse/" target="_blank" rel="noreferrer noopener">dynamics</a> in this vital ecosystem.



The concept of a "tipping point" - a threshold beyond which the Amazon could irreversibly degrade into savannah - has dominated environmental discussions. 



But now, recent studies have begun to question the accuracy of this alarming scenario, bringing new insights into the resilience of the region's rainfall patterns.



<h2 class="wp-block-heading" id="h-is-the-amazon-rainforest-stable">Is the Amazon rainforest stable?</h2>



Scientists from the Max Planck Institute for Meteorology (<a href="https://mpimet.mpg.de/en/homepage" target="_blank" rel="noreferrer noopener">MPI-M</a>) have made a significant breakthrough, revealing that the Amazon may sustain its rainfall even in extreme cases of deforestation. 



Published in the journal Geophysical Research Letters, the findings challenge earlier scientific consensus about the region’s vulnerability to rainfall disruption.



Previously, researchers emphasized the critical role of vegetation in maintaining Amazonian <a href="https://www.earth.com/news/nearly-40-of-climate-critical-amazon-rainforest-is-unprotected/" target="_blank" rel="noreferrer noopener">rainfall</a> through evapotranspiration - the process where plants transfer moisture from soil to the atmosphere.



This cycle, scientists warned, would weaken dramatically if widespread deforestation occurred, significantly reducing rainfall and destabilizing the region.



<h2 class="wp-block-heading" id="h-oversimplified-climate-models">Oversimplified climate models</h2>



These earlier predictions, however, depended heavily on models that oversimplified or overlooked key atmospheric processes. 



Most relied on global climate models that inadequately represented convection, the atmospheric mechanism crucial for rainfall. Alternatively, regional models were unable to account for how large-scale atmospheric circulation might adapt to deforestation.



Such limitations cast doubt on earlier predictions, necessitating a more sophisticated approach to better understand the complex <a href="https://www.earth.com/news/climate-extremes-will-boost-methane-emissions-in-the-amazon/" target="_blank" rel="noreferrer noopener">dynamics</a> involved.



<h2 class="wp-block-heading" id="h-a-new-modeling-approach">A new modeling approach</h2>



Experts at MPI-M, including Arim Yoon and Cathy Hohenegger, adopted an advanced approach using the global storm-resolving ICON model.



This model directly resolves atmospheric convection with extraordinary precision. They conducted their simulation globally over three years, operating at an exceptionally detailed resolution of five kilometers, a significant methodological advancement over previous research.



The findings revealed that rainfall in the Amazon isn't predominantly determined by evapotranspiration, as previously believed. Instead, large-scale atmospheric circulation substantially compensates for any loss of moisture due to deforestation.



<h2 class="wp-block-heading" id="h-ocean-winds-maintain-moisture-levels">Ocean winds maintain moisture levels</h2>



"The wind at about three kilometers altitude carries enough moisture from the ocean into the region to make up for the decline in evapotranspiration," said Yoon.



The calculations demonstrated little to no change in annual rainfall, even under conditions of complete deforestation, contrasting sharply with earlier findings.



This unexpected resilience suggests that earlier assessments of deforestation impacts may have overstated the Amazon’s vulnerability.



<h2 class="wp-block-heading" id="h-signs-of-a-more-stable-amazon">Signs of a more stable Amazon </h2>



"Precipitation over land seems more tightly coupled to the large-scale circulation than to evapotranspiration in our global storm-resolving simulation if compared to state-of-the-art climate models currently used in the IPCC assessment reports," noted Hohenegger.



"This fact is exciting as it asks for the revisitation of some of the things we thought we knew about precipitation over land and its sensitivity."



This research shifts scientific understanding towards a more nuanced view of rainfall dynamics in the Amazon.



<h2 class="wp-block-heading" id="h-rainfall-patterns-and-seasonal-variability">Rainfall patterns and seasonal variability</h2>



Despite the optimistic findings regarding total annual precipitation, significant changes remain in rainfall distribution throughout the year.



"Just using one indicator to assess the future of the <a href="https://www.earth.com/news/the-amazon-rainforest-and-the-looming-threat-of-drought/" target="_blank" rel="noreferrer noopener">Amazon rainforest</a> isn't enough. The details of the rainfall patterns can make a big difference," said Yoon.



Seasonal variability could profoundly impact the ecosystem, agriculture, and communities dependent on predictable rainfall patterns.



<h2 class="wp-block-heading" id="h-consequences-of-deforestation">Consequences of deforestation </h2>



The MPI-M scientists aim to further refine their analysis by examining whether extreme rainfall events or prolonged droughts might increase in frequency or intensity under conditions of deforestation. 



Understanding these patterns will provide critical insights into the real-world impacts of deforestation on Amazonian ecosystems and human livelihoods.



Although total rainfall might remain stable in the Amazon, deforestation inevitably disrupts ecological balance and climate stability. 



Changes in rainfall distribution, coupled with habitat loss and climate shifts, remain a threat to biodiversity, ecosystem health, and human communities relying on the Amazon.



The study is published in the journal <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024GL110503" target="_blank" rel="noreferrer noopener">Geophysical Research Letters</a>.&nbsp;



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Amazon rainforest may be much more stable than we thought

The Amazon rainforest, known as "the lungs of the Earth,"...

This bright blue creature might look like a single jellyfish drifting on the water, but it is actually a community of specialized polyps all working in unison. This <a href="https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/hydrozoa" target="_blank" rel="noreferrer noopener">hydrozoan</a>, known as the Blue Button jellyfish or Porpita porpita, appears delicate but displays a cunning strategy for survival.



Its float usually measures only a few inches across, yet it hosts an impressive mini-collective where each polyp plays a unique role. 



Some feed, some defend, and others handle reproduction - all of which contribute to the colony’s <a href="https://www.earth.com/news/world-jellyfish-day-2024-protecting-the-health-of-our-oceans/" target="_blank" rel="noreferrer noopener">success</a>.



Marine biologist Dr. Shi from the <a href="https://www.ysfri.ac.cn/ENGLISH.htm" target="_blank" rel="noreferrer noopener">Yellow Sea Fisheries Research Institute</a> has <a href="https://pubmed.ncbi.nlm.nih.gov/39591675/" target="_blank" rel="noreferrer noopener">documented</a> notable appearances of these organisms in new locations along coastal regions.



Studies have suggested that changes in ocean temperatures and currents may explain why this small floater is popping up in places where it once was rare.



<h2 class="wp-block-heading" id="h-a-floating-colony-not-a-jellyfish">A floating colony, not a jellyfish</h2>



The upper part of the colony looks like a thin disk that can be a brilliant blue or sometimes greenish-brown. This disk is a gas-filled float that keeps the group on the water’s surface as currents move it around.



Circling beneath the float are hundreds of tentacle-like structures that are actually bundled <a href="https://sussexwildlifetrust.org.uk/news/hydroids-and-bryozoans-the-weird-and-wonderful">polyps</a>. They branch off in different lengths, forming a fringe that does much of the colony’s work.



Some polyps specialize in gathering food from the water. Others focus on warding off would-be predators with stinging cells called nematocysts that are designed to deter an attacker.



This layered teamwork sets Porpita porpita apart from most solitary <a href="https://www.earth.com/news/jellyfish-more-than-just-a-snack-for-predatory-fish/" target="_blank" rel="noreferrer noopener">jelly-like creatures</a>. Its structure is so integrated that it can function almost like a single being.



<h2 class="wp-block-heading" id="h-porpita-have-a-mild-sting">Porpita have a mild sting</h2>



Most casual swimmers who brush up against this floating cluster feel little more than a mild irritation. The sting is gentle compared to that of more notorious marine animals, yet those with sensitive skin might notice some redness or itching.



The sting is still a defense that helps the colony survive. Small fish and other drifting animals think twice before nibbling on those tentacles!



Many beachgoers mistake the Blue Button for a <a href="https://www.earth.com/news/comb-jellyfish-can-fuse-with-a-friend-and-become-one-creature-after-injury/" target="_blank" rel="noreferrer noopener">jellyfish</a> because of its overall shape and bright hue. Careful observers soon realize, however, that this is a colonial hydrozoan rather than a single organism.



A separate <a href="https://www.lajar.cl/index.php/rlajar/article/view/vol51-issue4-fulltext-3070" target="_blank" rel="noreferrer noopener">analysis</a> suggests that sightings along the Mexican Atlantic have increased as more people venture into coastal areas. 



Researchers are using open-access data and field surveys to keep tabs on the spread of the species.



<h2 class="wp-block-heading" id="h-tiny-but-tough">Tiny but tough</h2>



This group of polyps may look fragile on the surface, yet it handles varied conditions surprisingly well. The float’s gas chamber helps the colony remain buoyant even during moderate waves.



It drifts passively, riding the currents without any directed swimming. Some ocean wanderers break apart easily if disturbed, but Porpita porpita remains intact unless hit by rough surf or beached.



It appears that this species adapts to changing waters by relying on wind and sea flows. Despite its delicate look, the colony endures journeys over wide stretches of ocean.



Scientists have found that population size can fluctuate with seasonal shifts in temperature. During certain months, cooler water encourages healthy growth, while extreme heat might reduce their numbers in shallower areas.



<h2 class="wp-block-heading" id="h-how-porpita-grows-and-reproduces">How Porpita grows and reproduces</h2>



Porpita porpita individuals have both male and female reproductive structures, making them hermaphrodites that are capable of different forms of reproduction. 



Some references describe an intriguing developmental process where larvae transform into floating colonies without a typical polyp stage.



This means new generations can appear if conditions are right, causing occasional clusters to show up unexpectedly on sunny beaches. 



The young start off as tiny forms, then expand into an enchanting blue disk with busy polyps attached.



These polyps may adopt distinct tasks almost immediately. In many cases, protective tentacles appear early, ensuring the colony has a built-in guard system even in its youth.



Studying early developmental stages offers clues about how these colonies adapt to diverse temperatures and salinity levels. More work is underway to map their genetic makeup and clarify potential regional differences.



<h2 class="wp-block-heading" id="h-why-does-any-of-this-matter">Why does any of this matter?</h2>



While Porpita porpita itself poses little harm to people, its presence can indicate shifts in local ecology. 



Changes in temperature or currents can carry these creatures beyond their usual routes, raising questions about broader marine health.



They also serve as food for certain sea slugs, snails, and sea turtles, linking them to larger food webs. Observing their distribution can reveal patterns in how smaller marine <a href="https://www.earth.com/news/arctic-invasion-jellyfish-are-moving-north-in-a-warming-climate/" target="_blank" rel="noreferrer noopener">predators</a> and grazers behave.



Some researchers believe continued sightings of the Blue Button in unfamiliar waters may reflect oceanic warming trends. Analyzing these subtle movements becomes a way to understand broader environmental influences.



Effective monitoring hinges on both academic efforts and everyday beachgoers who spot unusual clusters near shorelines. 



Citizen science projects are increasingly vital for gathering valuable data and strengthening the record of occurrences.



<h2 class="wp-block-heading" id="h-what-s-next-for-porpita-studies">What's next for Porpita studies?</h2>



Porpita porpita will likely keep surprising those who stroll along the beach and catch sight of a vivid blue disk washed ashore. Although harmless for most, its mild sting and unusual look cause many to marvel at what it really is.



Future investigations will show whether increased frequency of sightings correlates with patterns of warming seas and shifting currents. 



Understanding these drifting colonies may help scientists see how oceans are responding to constant environmental change.



Marine scientists who study the Blue Button view it as a subtle biological indicator of the world’s changing waters. 



They aim to gather more details about its genetic variations and possible global distribution patterns.



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This 'blue button jellyfish' isn't actually a jellyfish, so what is it?

This bright blue creature might look like a single jellyfish...

Throughout history, humanity has chased the elusive promise of eternal youth. From mythical fountains to today's anti-aging creams, the pursuit of staying forever young remains constant. But beneath this superficial search lies a deeper scientific exploration into cellular aging.



Recently, a team of researchers at <a href="https://www.osaka-u.ac.jp/en" target="_blank" rel="noreferrer noopener">Osaka University</a> in Japan might have brought us closer to genuinely reversing the aging process at a cellular level.



<h2 class="wp-block-heading" id="h-understanding-cellular-aging">Understanding cellular aging</h2>



Our bodies naturally <a href="https://www.earth.com/news/random-dna-mutations-shape-biological-aging/" target="_blank" rel="noreferrer noopener">age</a> as cells gradually become less active, transitioning into a state known as senescence. Senescent cells are not just older; they are distinctly larger and characterized by thicker stress fibers. 



These stress fibers play a crucial role in how cells move and interact with their surrounding environment. However, why these older cells maintain such an unusually large size has puzzled scientists for years.



"We still don't understand how these senescent cells can maintain their huge size," noted study lead author Pirawan Chantachotikul. "One intriguing clue is that stress fibers are much thicker in senescent cells than in young cells, suggesting that proteins within these fibers help support their size."



<h2 class="wp-block-heading" id="h-promoting-cellular-rejuvenation">Promoting cellular rejuvenation </h2>



In their quest for answers, researchers pinpointed a specific protein, AP2A1 (Adaptor Protein Complex 2, Alpha 1 Subunit), which seems crucial to this cellular phenomenon. 



Found predominantly in senescent cells, particularly within the structural stress fibers, AP2A1 could be the key to understanding cellular aging.



To explore AP2A1’s function, researchers manipulated its presence in cells, observing significant effects. 



"The results were very intriguing," said Shinji Deguchi, senior author of the study. "Suppressing AP2A1 in older cells reversed senescence and promoted cellular rejuvenation, while AP2A1 overexpression in young cells advanced senescence."



<h2 class="wp-block-heading" id="h-complex-collagen-scaffold">Complex collagen scaffold </h2>



Delving further into AP2A1, the researchers identified its close interaction with another vital protein, integrin β1. 



Integrin β1 is known for anchoring cells to their external surroundings, specifically to the extracellular matrix - a complex collagen scaffold providing structural support. 



Both AP2A1 and integrin β1 appear to traverse the stress fibers together, a process critical in cell structure and function.



Integrin β1’s role in strengthening adhesion between cells and their external environment could explain the enlarged and raised structure typical of senescent cells. This interaction likely helps older cells maintain their oversized physical characteristics.



<h2 class="wp-block-heading" id="h-potential-marker-for-cellular-aging">Potential marker for cellular aging</h2>



Given its strong correlation with senescent cells, AP2A1 presents itself as an exciting potential <a href="https://www.earth.com/news/muscles-defy-aging-with-remarkable-resilience/" target="_blank" rel="noreferrer noopener">biomarker</a> for aging. 



Identifying such markers is crucial in understanding aging at a molecular level and might eventually allow scientists to quantify aging more precisely.



Moreover, AP2A1 is not just a passive marker. Its active involvement in aging processes positions it as a promising target for medical interventions aimed at combating age-related diseases.



<h2 class="wp-block-heading" id="h-beyond-cosmetic-applications">Beyond cosmetic applications</h2>



This research is important beyond just improving how we look as we <a href="https://www.earth.com/news/beyond-genetics-the-biggest-factors-that-influence-health-and-aging/" target="_blank" rel="noreferrer noopener">age</a>. It targets the root cause of aging at the cellular level. Diseases linked to aging, such as heart disease, osteoporosis, and some cancers, may improve with therapies targeting proteins like AP2A1. 



If scientists can reverse or slow cellular aging, people might live healthier, longer lives. Instead of treating symptoms after diseases appear, this approach prevents or delays their onset. 



Thus, understanding AP2A1 could lead to significant advances in medicine, benefiting overall human health, increasing lifespan, and enhancing quality of life.



<h2 class="wp-block-heading" id="h-looking-forward">Looking forward</h2>



The identification of a cellular process linked directly to aging offers exciting possibilities for future treatments. Current anti-aging methods usually mask aging symptoms rather than addressing their causes.



However, this new cellular discovery targets aging at its <a href="https://www.earth.com/news/aging-hotspot-found-in-the-brain-may-hold-the-key-to-longevity/" target="_blank" rel="noreferrer noopener">roots</a>, potentially reversing the process entirely. While the research is still evolving and requires further studies, its potential impact is significant. 



By understanding and controlling cellular mechanisms like the AP2A1 protein, medicine could effectively reverse aging, not just hide it.



Such advances promise genuine rejuvenation, significantly improving human health and extending lifespan. As science moves forward, these findings could lead to treatments combating various age-related diseases, from osteoporosis to heart disease. 



Though practical applications are not yet available, the groundwork is promising. The ultimate goal is to help people maintain youthfulness at the cellular level, enhancing overall health and longevity.



The study is published in the journal <a href="https://www.sciencedirect.com/science/article/pii/S0898656825000294?via%3Dihub" target="_blank" rel="noreferrer noopener">Cellular Signalling</a>.



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Scientists discover a protein that reverses cellular aging

Throughout history, humanity has chased the elusive promise of eternal...

Memory plays a critical role in learning and survival across species. Particularly in primates, social interaction significantly shapes how memory develops and functions. 



Primates, from monkeys to great apes, spend substantial time in social environments, making it crucial for them to observe and learn from others effectively.



<h2 class="wp-block-heading" id="h-social-interactions-among-primates">Social interactions among primates</h2>



Primates live closely together in groups. They rely heavily on noticing social signals from others, like facial expressions and gestures.



From birth, primates naturally focus more on interacting with each other than with objects or things.



This strong preference for social interaction helps them develop important skills, especially in how they learn and remember information. 



Paying attention to others is crucial for their brain development and memory formation, influencing how primates learn and adapt throughout life.



<h2 class="wp-block-heading" id="h-social-interactions-boost-ape-memory">Social interactions boost ape memory</h2>



A team of researchers from the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, examined how social interactions affect memory in great apes.



They presented both young and adult apes with videos showing a human hand (social model) or a mechanical claw (non-social model) constructing a tower.



"We found that apes better remembered a tower when they saw a hand building it rather than a mechanical claw. This is because they paid more attention to the actions of a social being rather than a machine," noted Marie Padberg, the first author of the study.



<h2 class="wp-block-heading" id="h-attention-improves-social-memory">Attention improves social memory</h2>



To understand this better, the researchers partnered with the <a href="https://www.unisa.edu.au" target="_blank" rel="noreferrer noopener">University of South Australia</a>. They used artificial intelligence (AI) to analyze regular video recordings of the apes. 



The AI technology measured the apes' heart rates to determine their attention levels during the experiment.



The results showed that apes paid more attention during social demonstrations. Higher attention was directly linked to better memory, showing how closely attention and memory are connected.



<h2 class="wp-block-heading" id="h-processing-social-stimuli">Processing social stimuli</h2>



Interestingly, improved memory for social events was evident only in adult apes. Younger apes, including juveniles and infants, did not show memory enhancement when viewing social models. 



This outcome differs from humans, who exhibit superior social memory from infancy. These findings suggest a developmental difference between humans and other apes in processing social stimuli.



Study senior author Daniel Haun is the director of the Department of Comparative Cultural Psychology at the Max Planck Institute for Evolutionary Anthropology.



"Non-human ape infants and juveniles did not show superior memory for social events. There could be several reasons for this, including the nature of the objects, the complexity of the task, or the duration of the videos," noted Haun.



"Further research is needed to determine whether superior social memory at younger ages is truly a uniquely human phenomenon."



<h2 class="wp-block-heading" id="h-developmental-timing-and-memory">Developmental timing and memory</h2>



This study highlights how important the timing of cognitive development is in primates. It suggests that non-human primates, like apes, might only show improved memory from social interactions as they grow older.



Younger apes do not experience this benefit early in life, unlike human infants who show strong social memory from birth. 



By understanding these differences in developmental timing, scientists can better distinguish how human thinking differs from that of other primates.



<h2 class="wp-block-heading" id="h-social-memory-across-apes">Social memory across apes</h2>



The research took place at the <a href="https://www.eva.mpg.de/comparative-cultural-psychology/studying-non-human-primates/wolfgang-koehler-primate-research-center/" target="_blank" rel="noreferrer noopener">Wolfgang Köhler Primate Research Center</a> in Leipzig, Germany. 



The scientists studied 42 great apes, including chimpanzees, bonobos, gorillas, and orangutans. These apes ranged in age from as young as 3 months to as old as 47 years.



This study is the first to investigate how social memory develops as apes grow older. The results represent an important step forward in understanding similarities and differences between human and ape psychology.



<h2 class="wp-block-heading" id="h-future-research-directions">Future research directions</h2>



The detailed results are published in the journal Animal Behaviour. They show how paying attention to social interactions helps improve memory in different species.



Future research may explore how the difficulty of tasks, familiarity with objects, and interactions within social groups affect memory. These studies will help scientists understand more clearly how both humans and other primates develop and use social memory.



The study is published in the journal <a href="https://www.sciencedirect.com/science/article/pii/S0003347225000089?via%3Dihub" target="_blank" rel="noreferrer noopener">Animal Behaviour</a>.



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Social interactions have a surprising influence on memory in great apes

Memory plays a critical role in learning and survival across...

The natural environment is repeatedly reinventing itself with dynamic processes which have a tendency to continue on for millions of years. Extinction events are among the strongest forces which not only kill specific life forms but also offer the basis for fresh avenues of evolution. 



A recent study evokes a fascinating image of the process, revealing how the death of the largest dinosaurs indirectly created the fruit-rich habitats which were so important to our primate ancestors.



The research was led by Christopher Doughty, an ecoinformatics professor at <a href="https://nau.edu/" target="_blank" rel="noreferrer noopener">Northern Arizona University</a>.



<h2 class="wp-block-heading" id="h-a-prehistoric-legacy">A prehistoric legacy</h2>



Sauropods, the long-necked, plant-munching dinosaurs of the ancient world, had a massive influence on the world around them. These hulking dinosaurs knocked over trees on a routine basis and munched through tons of plant matter. 



When Sauropods went extinct some 66 million years ago, their loss profoundly changed ecosystems. Forests rebounded and closed up, which decreased the amount of sunlight on the ground and paved the way for an impressive evolutionary shift.



<h2 class="wp-block-heading" id="h-sauropods-and-ecological-change">Sauropods and ecological change</h2>



The extinction of Sauropods enabled trees to evolve without interruptions. The forests became denser, and tree competition for light intensified. 



Trees developed larger fruits and seeds to dominate others, and these provided their offspring with an advantage over others by supplying them with additional energy and greater survival chances in shaded conditions.



"At first glance, the darker forest understory caused by dinosaur extinctions may seem unimportant, but it could have directly led to the evolution of our fruit-eating primate ancestors," said Professor Doughty.



<h2 class="wp-block-heading" id="h-the-dinosaur-fruit-connection">The dinosaur-fruit connection</h2>



Before the dinosaurs went extinct, fruits were scarce, and seeds were small. But with the ecological niche left open by the sauropods, plants evolved immediately. 



Stronger seedlings, with larger seeds, were able to compete for limited sunlight. In addition, fleshy fruits evolved as an incredibly efficient way of enticing animals to scatter seeds and reproduce.



Even though this evolution scenario was previously theorized, no fossil records existed to conform the hypothesis.



To investigate, Professor Doughty and his team developed a cutting-edge model of seed and fruit size evolution after the dinosaurs became extinct. The model precisely replicated fossil records for the last 65 million years and decisively substantiated the hypothesis.



<h2 class="wp-block-heading" id="h-reversal-of-dinosaur-driven-fruit-trends">Reversal of dinosaur-driven fruit trends</h2>



Interestingly, the model also forecasted a future reversal of seed evolutionary patterns. 



Seeds began to shrink about 35 million years ago. This coincided with the appearance of new large mammals that were successful in duplicating, though on a smaller scale, the forest-clearing behavior previously shown by sauropods.



"Our model predicted these animals would open the forest enough that sufficient light began to enter the understory, and larger seeds were no longer successful over smaller seeds," explained Doughty. 



"The evolutionary pressure for seed size to increase began to diminish. Thus, we were able to explain the trends in seed size over time without resorting to external influences such as climate change."



<h2 class="wp-block-heading" id="h-megafauna-extinction-and-ecological-reset">Megafauna extinction and ecological reset</h2>



About 50,000 years ago, large mammals like mammoths went extinct. These animals previously opened forests by knocking down trees and clearing vegetation. Their extinction allowed forests to become dense and dark again. 



With less sunlight reaching the forest floor, plants adapted by producing larger seeds. This highlights how big animals shape their environment, influencing the evolution of plants.



<h2 class="wp-block-heading" id="h-humans-as-ecosystem-shapers">Humans as ecosystem shapers </h2>



Modern human activity mimics the prehistoric impacts of the giants. Current selective forest harvesting mimics the prehistoric pressure imposed by dinosaurs on seed size and dispersal.



But if humans stop modifying forest structure and are not substituted by other megafauna, forests will shift back to more dense, dark structures, and this may trigger another evolutionary adjustment towards larger seeds. 



"These results provide a striking example of how large dinosaurs - and their eventual extinction - not only shaped their contemporary environment but also triggered cascading effects on ecosystems for millions of years," said Benjamin Wiebe, an NAU researcher.



"The next time you're eating fruit or pondering, 'why am I here,' consider the impact of the dinosaur extinctions."



The study is published in the journal <a href="https://onlinelibrary.wiley.com/doi/epdf/10.1111/pala.70002" target="_blank" rel="noreferrer noopener">Palaeontology</a>.



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How dinosaur extinction influenced fruit evolution

The natural environment is repeatedly reinventing itself with dynamic processes...

Unhealthy,Products.,Food,Bad,For,Figure,,Skin,,Heart,And,Teeth.

Most dietary programs focus on weight loss or meeting U.S. nutrition guidelines. These guidelines do not mention ultra-processed foods (UPFs), even though they are linked to serious health risks. 



Chips, candy, and other mass-produced <a href="https://www.earth.com/news/new-tool-lets-you-check-how-processed-your-food-is-grocerydb/" target="_blank" rel="noreferrer noopener">packaged foods</a> often replace natural ingredients with additives. Studies show eating UPFs increases the risk of diseases and early death.



Despite these risks, no major dietary programs focus on reducing UPF intake. 



To address this gap, researchers from <a href="https://drexel.edu" target="_blank" rel="noreferrer noopener">Drexel University</a> designed an intervention. The goal was to help people eat fewer ultra-processed foods using multiple strategies.



<h2 class="wp-block-heading" id="h-understanding-ultra-processed-foods-the-basics">Understanding ultra-processed foods - the basics</h2>



Ultra-processed foods (UPFs) are the heavily modified, lab-created stuff you find in most grocery store aisles - think packaged snacks, sugary cereals, instant noodles, and even some protein bars. 



They go through multiple industrial processes, packed with additives like preservatives, <a href="https://www.earth.com/news/artificial-sweetener-neotame-has-shocking-effects-on-gut-health/" target="_blank" rel="noreferrer noopener">artificial flavors</a>, emulsifiers, and loads of sugar or refined oils. 



These foods are designed to be super convenient, hyper-palatable, and have a long shelf life. 



But here’s the catch: they often lack real nutrition and can mess with your metabolism, gut health, and even brain chemistry.



Studies link them to everything from obesity and diabetes to <a href="https://www.earth.com/news/artificial-sweetener-erythritol-sugar-substitute-linked-to-blood-clots-heart-disease/" target="_blank" rel="noreferrer noopener">heart disease</a> and even mental health issues.



The problem is, ultra-processed foods are everywhere, and they’re marketed as quick, tasty, and sometimes even "healthy" options. 



But because they’re engineered for taste and texture, they can be addictive, making it easy to overeat without feeling full. 



Most importantly, their ingredient lists often look more like a chemistry experiment than actual food.



<h2 class="wp-block-heading" id="h-reducing-ultra-processed-food-intake">Reducing ultra-processed food intake</h2>



The Drexel University program went beyond education. It included mindfulness strategies to handle cravings, one-on-one meal planning, and household involvement.



The researchers also provided financial support to help participants buy healthier foods, which can be expensive.



The two-month intervention involved 14 adults with overweight or obesity who ate at least two UPF items daily. On average, participants cut their UPF intake by nearly half.



“Reducing UPF intake can be extremely difficult, because the <a href="https://www.earth.com/news/ultra-processed-foods-make-our-bodies-age-faster/" target="_blank" rel="noreferrer noopener">food</a> industry wants us to be hooked on UPFs,” said lead author Dr. Charlotte Hagerman.



“The industry designs UPFs to be ultra-delicious, convenient, cheap, and constantly present in the U.S. - even if not directly in front of us, then on our TVs, phones, and roadside signs.”



<h2 class="wp-block-heading" id="h-promising-results-from-the-intervention">Promising results from the intervention</h2>



Despite the small sample size, the results of the trial were encouraging.



By the end of the program, participants had nearly halved their UPF <a href="https://www.earth.com/news/eating-ultra-processed-foods-makes-your-muscles-weaker-and-more-fragile/" target="_blank" rel="noreferrer noopener">intake</a>, measured both in calories and total items consumed. They also reduced their daily calorie intake by more than 600 calories. 



Sugar consumption declined by 50 percent, while saturated fat intake dropped by 37 percent. Sodium intake also saw a significant decrease of 28 percent. On average, participants lost 7.7 pounds over the two-month period.



“Interestingly, participants did not have meaningful increases in their fruit and vegetable consumption, suggesting that if we want to improve dietary intake more holistically, we may need to more strongly encourage people to eat these foods,” said Hagerman.



<h2 class="wp-block-heading" id="h-how-the-intervention-worked">How the intervention worked</h2>



Participants met weekly with health behavior coaches in both group and individual sessions. 



They learned how to identify UPFs, cope with cravings, and improve their home food environment. Each participant received a $100 grocery store gift card to support healthier purchases.



To track progress, the participants completed detailed food intake reports. They documented everything they ate on selected weekdays and weekends using a specialized assessment tool. 



The researchers classified foods as UPFs or non-UPFs, consulting experts when needed to avoid bias.



<h2 class="wp-block-heading" id="h-psychological-benefits-of-cutting-upfs">Psychological benefits of cutting UPFs</h2>



Beyond physical health, the participants noticed mental and emotional benefits. Many reported feeling better overall, with improvements in mood and <a href="https://www.earth.com/news/ultra-processed-foods-are-harmful-to-nearly-every-part-of-the-body/" target="_blank" rel="noreferrer noopener">energy</a>.



Since UPFs can trigger addiction-like behaviors, reducing intake may help regulate emotions and improve mental clarity. Cutting back on UPFs also seemed to help participants feel more in control of their eating habits, making it easier to maintain a healthier diet.



By addressing both the physical and psychological aspects of food choices, the program helped participants develop a healthier relationship with eating. This could be crucial for long-term success in maintaining dietary changes.



<h2 class="wp-block-heading" id="h-next-steps-for-research">Next steps for research</h2>



“The findings suggest that people can reduce their ultra-processed food intake, if given the proper tools, and that they will be enthusiastic about interventions designed for this purpose,” said Hagerman. 



“The results also suggest that reducing UPF intake will lead to meaningful health improvements – such as weight loss and better mood – in as short as eight weeks.”



The research team plans to expand the study. Future work will test the intervention on a larger sample and evaluate which strategies are most effective. The researchers also want to see if the program works across different populations.



<h2 class="wp-block-heading" id="h-the-bigger-picture">The bigger picture</h2>



This study highlights the need for better public awareness and policies to reduce UPF consumption. Since UPFs dominate the food supply, long-term solutions should address accessibility and affordability of healthier alternatives. 



Education, financial incentives, and community-based programs could help more people reduce their UPF intake. As research continues, these findings may shape new approaches to improving public health through better nutrition.



The study is published in the journal <a href="https://onlinelibrary.wiley.com/doi/10.1002/osp4.70029" target="_blank" rel="noreferrer noopener">Obesity Science &amp; Practice</a>.



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What happens when you remove processed foods from your diet? Doctors found out

Most dietary programs focus on weight loss or meeting U.S....

Gas,Methane,Bubbles,Frozen,In,Winter,Ice,Of,Lake,Baikal,

These frozen bubbles of methane gas are eerily beautiful, but don't let appearances fool you. Methane is a powerful greenhouse gas that is often overshadowed by carbon dioxide in discussions on climate change, even though the impact of methane is far more serious.



The effects of industrial pollution, car emissions, deforestation and agriculture are usually central when we consider the forces driving climate change. 



However, researchers have now uncovered an unexpected and significant source of methane emissions, hidden beneath the icy landscapes of the Arctic.



<h2 class="wp-block-heading" id="h-methane-is-a-potent-climate-driver">Methane is a potent climate driver</h2>



As powerhouse greenhouse gas, methane doesn’t get as much attention as <a href="https://www.earth.com/news/global-carbon-dioxide-emissions-hit-a-record-high-in-2023/" target="_blank" rel="noreferrer noopener">carbon dioxide</a>. However, it’s way more potent - about 80 times more effective at trapping heat in the atmosphere over 20 years. 



Methane comes from natural sources like wetlands and termites, but human activities crank up emissions big time. 



Livestock, landfills, and oil and gas operations release massive amounts of methane into the air. Cows, for example, burp out methane as they digest food (yep, cow burps are a real climate problem). 



Meanwhile, <a href="https://www.earth.com/news/rising-methane-emissions-threaten-earths-habitability/" target="_blank" rel="noreferrer noopener">leaks from fossil fuel</a> extraction and pipelines quietly pump methane into the atmosphere, making the issue even worse.



The problem? Methane doesn’t stick around as long as CO₂ - only about 12 years - but in that short time, it does serious damage. 



Cutting methane emissions could quickly slow global warming, making it one of the fastest ways to fight climate change.



<h2 class="wp-block-heading" id="h-investigating-methane-leaks-from-glaciers">Investigating methane leaks from glaciers</h2>



Gabrielle Kleber and Leonard Magerl, postdoctoral researchers from <a href="https://ic3.uit.no/" target="_blank" rel="noreferrer noopener">UiT</a>, The Arctic University of Norway’s iC3 (Centre for Ice, Cryosphere, Carbon, and Climate), have discovered that Arctic glaciers are not as innocent as they may seem.



Beneath their icy veneer, these glaciers are leaking substantial amounts of methane into the atmosphere. 



This revelation stems from studies conducted at Vallåkrabreen, a small valley glacier that is situated in central Svalbard.



<h2 class="wp-block-heading" id="h-glaciers-and-methane-levels">Glaciers and methane levels</h2>



The researchers measured methane levels in groundwater springs and the melt river that drains from the glacier. The findings were remarkable.



The methane levels in the melt river were found to be up to 800 times higher than the equilibrium level in the atmosphere, hitting a peak concentration of 3,170 nanomolar early in the melt season.



"We expected to see some methane in the meltwater, but the concentrations we measured were surprisingly high," explained Gabrielle, highlighting the unexpected magnitude of the problem.



"Our isotopic analysis showed that this methane is geologic in origin and is released as the glacier retreats and glacial meltwater flushes through fractures in the rock." 



Interestingly, the source of this methane was not microbial activity beneath the ice, which had been suspected in research in other glacial settings.



Instead, the methane originated from ancient <a href="https://www.earth.com/news/knipovich-ridge-new-hydrothermal-field-arctic-intense-geological-activity/" target="_blank" rel="noreferrer noopener">geological formations</a>, and had been trapped in the region for millions of years.



<h2 class="wp-block-heading" id="h-methane-and-glacial-fracking">Methane and "glacial fracking"</h2>



The further the researchers ventured into their investigation, the more they discovered about the role of glaciers in methane emissions. 



The scientists have likened the process to a natural form of fracking, coining the term "glacial fracking" to describe this phenomenon, whereby the glaciers essentially act as colossal covers that bury methane under the ground. 



However, as they melt, the water flushes the gas through cracks in the bedrock, ushering the methane above ground and into the atmosphere.



This process is not limited to just one glacier. 



The researchers estimated that similar mechanisms could be in effect at hundreds of other glaciers across Svalbard, with over 1,400 land-terminating glaciers situated on the archipelago, many of which overlie methane-rich bedrock.



<h2 class="wp-block-heading" id="h-climate-feedback-loop">Climate feedback loop</h2>



The implications of this research extend far beyond Svalbard as well, to the broader Arctic region and, indeed, the whole planet.



The <a href="https://www.earth.com/news/arctic-ocean-warming-four-times-faster-than-global-average/" target="_blank" rel="noreferrer noopener">Arctic is experiencing warming</a> at a rate four times the global average, and its glaciers are retreating at an alarming pace.



As they shrink, more methane could be released, setting up what scientists call a positive feedback loop, where warming accelerates glacial melting, setting free more methane, which then intensifies warming and further melting.



"Methane is a much more powerful <a href="https://www.earth.com/news/greenhouse-gas-emissions-reach-another-all-time-high/" target="_blank" rel="noreferrer noopener">greenhouse gas</a> than carbon dioxide over short timescales. Even though these emissions are seasonal, they could add up as more glaciers retreat," warned the research team, emphasizing the potential global climate repercussions.



<h2 class="wp-block-heading" id="h-what-s-next-for-glaciers-and-methane">What's next for glaciers and methane?</h2>



These findings highlight the importance of understanding the <a href="https://www.earth.com/news/arctic-waters-are-emitting-more-carbon-as-they-continue-to-warm/" target="_blank" rel="noreferrer noopener">Arctic carbon cycle</a> and the impact climate change has on it. 



Future research will aim to reassess methane budgets in the Arctic, incorporating glacial emissions alongside permafrost thaw and wetland methane fluxes. 



While this study represents a significant first step, more research is needed in order to discern the full scale of the problem.



The full study was published in the journal <a href="https://bg.copernicus.org/articles/22/659/2025/" target="_blank" rel="noreferrer noopener">Biogeosciences</a>.



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Massive new source of leaking methane gas emissions discovered

These frozen bubbles of methane gas are eerily beautiful, but...

It seems unthinkable that anything could live after tens of thousands of years in hibernation. The discovery of a tiny creature in the Siberian permafrost has sparked conversations about how resilient life can be.



In a recent breakthrough, researchers determined that a worm which had been frozen for about 46,000 years had survived and remained alive. 



Dr. Philipp Schiffer, a group leader in the <a href="https://zoologie.uni-koeln.de/en/" target="_blank" rel="noreferrer noopener">Institute of Zoology</a> at the University of Cologne, and his colleagues, have been studying how this creature managed to survive well beyond its usual lifespan.



<h2 class="wp-block-heading" id="h-extreme-environment-in-siberian-permafrost">Extreme environment in Siberian permafrost</h2>



Siberia has vast stretches of permafrost, which is soil or sediment that remains frozen for at least two consecutive years. 



The <a href="https://www.earth.com/news/permafrost-is-no-longer-permanent-arctic-communities-in-danger/" target="_blank" rel="noreferrer noopener">frozen ground</a> can extend hundreds of feet below the surface in certain regions, with the cold temperatures preserving anything trapped within its layers.



Conditions in these areas can be challenging for people, but the permafrost forms perfect vaults for preserving animal remains. Thick ice and frigid temperatures keep organic material fresh enough to study thousands of years later.



<h2 class="wp-block-heading" id="h-putting-life-on-pause">Putting life on pause</h2>



The resurrected worm belongs to a genus known for its ability to enter cryptobiosis, which is a biological strategy where life appears to stop under cold conditions. 



No major metabolic activity occurs in this state, and organisms can endure severe environmental conditions that would normally be lethal.



Biologists have documented cryptobiosis in other creatures, such as <a href="https://www.earth.com/news/water-bear-tardigrade-fossils-reveal-how-they-survived-several-mass-extinction-events/">tardigrades</a> and certain brine shrimp. The animals halt their usual body functions until they can return to an environment that can support growth and reproduction.



<h2 class="wp-block-heading" id="h-significance-of-the-frozen-worm">Significance of the frozen worm</h2>



Experts identified the newly studied nematode as Panagrolaimus kolymaensis, a species not previously described in scientific literature. 



Radiocarbon dating showed that the sample was tens of thousands of years old, indicating that this worm spent most of its existence in suspended animation under frozen sediment.



It was retrieved at a depth of about 40 yards (37 meters). This position helped it stay protected in that intense cold, and gave it a chance to be resurrected in modern laboratories, where it resumed normal activity and even produced offspring.



<h2 class="wp-block-heading" id="h-unique-survival-strategies">Unique survival strategies</h2>



According to the researchers, nematodes of this variety usually live for only one or two months. The worm that reawakened in the lab outlived that window by tapping into cryptobiotic powers that are still under investigation.



Special molecules may stabilize cells in these worms, keeping them intact despite extreme dryness or temperature shifts. Similar molecules have been found in other organisms that are known to survive dehydration and freezing.



“No one had thought that this process could last millennia, 40,000 years, or even longer. It is simply amazing that life can begin again after so long, in the state between life and death,” said Dr. Schiffer.



<h2 class="wp-block-heading" id="h-genetics-of-the-frozen-worm">Genetics of the frozen worm </h2>



The experts used genome sequencing to confirm that this worm was something different. Its lineage seems to share parts of the genetic toolkit for cryptobiosis with Caenorhabditis elegans, a nematode species that is commonly used in lab research.



Similar stasis has been observed in tardigrades, often called water bears. A 2017 NASA <a href="https://www.nasa.gov/podcasts/houston-we-have-a-podcast/water-bears-in-space/">study</a> noted their capacity to withstand harsh space conditions, suggesting these tiny beings have defense systems against extreme radiation and severe temperature swings.



Certain seeds can also remain viable for years in cold storage and then germinate when conditions improve. Yet the nematode’s frozen stretch lasted far longer than the typical lifetime for most preserved biological samples.



<h2 class="wp-block-heading" id="h-cryptobiosis-in-extreme-environments">Cryptobiosis in extreme environments</h2>



Scientists who focus on deserts, polar regions, and even other planets may look for parallels in cryptobiotic organisms. Environments like the Atacama Desert, known for its dryness, already harbor small <a href="https://www.earth.com/news/scientists-find-new-forms-of-life-inside-humans-rna-carriers-obelisks/">life forms</a> that have evolved impressive strategies to handle scarce moisture.



Conditions on Mars and icy moons around Saturn are less welcoming. However, knowledge of how simple creatures cheat time might lead to ideas about extraterrestrial survival or more efficient preservation methods for samples on Earth.



Cryptobiosis involves shutting down vital processes without losing structural integrity. Genetic pathways that enable such suspension might have applications in food preservation or even organ transplants.



If scientists isolate the genes that protect cells against freezing, future technologies could incorporate them into strategies for stabilizing delicate tissues. Biomedical researchers are always searching for ways to minimize damage from cold storage or dehydration.



<h2 class="wp-block-heading" id="h-the-legacy-of-the-frozen-worm">The legacy of the frozen worm</h2>



The original specimen has died, but its offspring remain alive in controlled conditions. This provides more opportunities for tests on how these <a href="https://www.earth.com/earthpedia-articles/nematodes/">nematodes</a> handle rehydration, changes in temperature, and prolonged hibernation.



Genetic comparisons with other species may shed light on whether these traits developed once in nematode history or evolved in multiple lineages separately. Either way, the results challenge the idea that living things cannot pause for millennia.



Experts see the next research steps involving experiments that identify proteins or sugars that replace water in the worm’s cells during dormancy. They could also investigate new forms of cryptobiosis in other deep-freeze environments, such as <a href="https://www.earth.com/news/stability-of-antarctica-is-threatened-by-submarine-canyons/">Antarctic glaciers</a>.



Evolutionary biologists might expand research into older permafrost samples. If more ancient specimens are discovered, scientists may gain a better understanding of how life on Earth endures in these harsh and extreme conditions.



The study is published in <a href="https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1010798" target="_blank" rel="noreferrer noopener">PLOS Genetics</a>.



Image Credit: Shatilovich et al, 2023, PLOS Genetics



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Frozen worm comes back to life after 46,000 years

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