When it comes to the classic age-old advice to drink eight cups of water a day, we generally follow it without questioning the scientific reasoning. It is after all, considered a pillar of good health.



However, have you ever stopped to consider exactly why this water intake recommendation is so universally accepted?



<h2 class="wp-block-heading" id="h-health-impacts-of-water-consumption">Health impacts of water consumption</h2>



A team of dedicated researchers from <a href="https://www.ucsf.edu/" target="_blank" rel="noreferrer noopener">UC San Francisco</a> sought to clarify this. They embarked on an investigative journey to understand this seemingly mundane but essential health advice.



Their mission was clear – to establish a tangible link between water consumption and health benefits, scrutinizing the evidence extensively.



<h2 class="wp-block-heading" id="h-science-behind-the-benefits-of-water">Science behind the benefits of water</h2>



“For such a ubiquitous and simple intervention, the evidence hasn't been clear and the benefits were not well-established, so we wanted to take a closer look,” the study’s senior correspondent, Benjamin Breyer, perfectly encapsulate the reasoning behind their quest.



Breyer, a distinguished professor and chair of the UCSF Department of Urology, led the team's explorative initiative.



“The amount of rigorous research turned out to be limited, but in some specific areas, there was a statistically significant benefit,” Breyer said. “To our knowledge, this is the first study assessing the benefits of <a href="https://www.earth.com/news/drinking-water-is-the-key-to-a-long-and-healthy-life/" target="_blank" rel="noreferrer noopener">water consumption</a> on clinical outcomes broadly.”&nbsp;



<h2 class="wp-block-heading" id="h-drinking-eight-cups-of-water-daily">Drinking eight cups of water daily</h2>



The researchers meticulously analyzed 18 randomized controlled trials and found strong evidence favoring regular water intake for preventing kidney stones and aiding weight loss.



The experts found that drinking eight cups of water a day significantly decreased the chances of kidney stones recurring.



The study also unveiled that adults who consumed about six cups of water a day experienced weight loss. However, the same did not hold true for adolescents who drank over eight cups daily.



Despite this, the authors confidently suggest that encouraging people to drink water before meals could potentially help tackle the growing issue of <a href="https://www.earth.com/news/water-is-a-powerful-weapon-against-obesity-and-diabetes/" target="_blank" rel="noreferrer noopener">obesity</a>.



<h2 class="wp-block-heading" id="h-hydration-and-health-challenges">Hydration and health challenges</h2>



Have frequent headaches that refuse to go away? Studies suggest you might want to consider increasing your water intake. 



Adults who experienced recurrent headaches reported feeling better after three months of increased water consumption.



For patients grappling with <a href="https://www.earth.com/news/global-diabetes-rate-has-doubled-reaching-over-800-million/" target="_blank" rel="noreferrer noopener">diabetes</a> and elevated blood glucose levels, an additional four cups of water a day seemed to help manage their condition. 



Women plagued by recurrent urinary tract infections also saw benefits – increased water consumption resulted in fewer infections and extended the time between them.



Let's not overlook the young adults who wrestle with low blood pressure issues. Their ailment appeared to be significantly alleviated by drinking more water.



“We know that dehydration is detrimental, particularly in someone with a history of kidney stones or urinary infections,” said Breyer.



<h2 class="wp-block-heading" id="h-some-may-benefit-from-less-water">Some may benefit from less water</h2>



For someone suffering from frequent urination, a decrease in water intake could possibly help. As Breyer pointed out, there isn't a one size fits all approach for water consumption.



In essence, we need to pay attention to our body's individual needs to determine the optimal level of water intake. 



We certainly can't ignore the importance of <a href="https://www.earth.com/news/hydration-reduces-the-risk-of-heart-failure/" target="_blank" rel="noreferrer noopener">hydration</a> for our health, and this study highlights that fact.



<h2 class="wp-block-heading" id="h-hydration-myths-and-misconceptions">Hydration myths and misconceptions</h2>



While the benefits of staying hydrated are well-documented, several myths about hydration continue to circulate. 



One common misconception is that everyone needs precisely eight cups of water daily, regardless of individual factors such as age, activity level, or climate. 



Experts clarify that hydration needs vary widely, with some individuals requiring more or less water based on their unique circumstances.



Another myth is that only water counts toward hydration. Beverages like tea, <a href="https://www.earth.com/news/is-coffee-good-for-you-it-may-depend-on-your-genes/" target="_blank" rel="noreferrer noopener">coffee</a>, and milk, as well as water-rich foods like fruits and vegetables, contribute significantly to overall fluid intake. 



This flexibility can make staying hydrated less daunting, especially for those who struggle to drink plain water.



Lastly, while sports drinks are often marketed as essential for hydration, they are typically unnecessary for the average person unless engaging in prolonged, intense physical activity. 



For most, water or natural alternatives suffice to maintain a healthy balance. Understanding these nuances can help individuals make more informed decisions about their hydration habits, promoting better overall health without falling prey to misleading claims.



The full study was published in the journal JAMA Network Open.



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Drinking water is very good for you in many ways, but how much should you drink?

When it comes to the classic age-old advice to drink eight cups of water a day, we generally follow it without questioning the scientific reasoning. It is after all, considered a pillar of good health. However, have you ever stopped to consider exactly why this water intake recommendation is so universally accepted? Health impacts of water consumption A team of dedicated researchers from UC San Francisco sought to clarify this. They embarked on an investigative journey to understand this seemingly mundane but essential health advice. Their mission...

During the height of the COVID <a href="https://www.earth.com/news/ozone-pollution-dropped-dramatically-during-pandemic/">pandemic</a>, and even now when some countries seem to see light at the end of the tunnel, disposable masks are more expensive and harder to find due to increased demand. 

It should come as no surprise that all those little paper products wreak havoc on the environment, especially with more of them circulating than ever before.  

The pandemic is responsible for an estimated 7,200 tons of medical waste every day. Much of that waste comes in the form of disposable masks. Even now, many healthcare workers must wear masks at all times during work. 

A new study from the <a href="https://www.mit.edu/">Massachusetts Institute of Technology</a> shows that financial and environmental costs could be drastically reduced by switching to reusable masks. 

"Perhaps unsurprisingly, the approaches that incorporate reusable aspects stand to have not only the greatest cost savings, but also significant reduction in waste," explained study senior author Professor Giovanni Traverso.

"Our vision was that if we had a reusable system, we could reduce the cost. The majority of disposable masks also have a significant environmental impact, and they take a very long time to degrade."

 "During a pandemic, there's a priority to protect people from the virus, and certainly that remains a priority, but for the longer term, we have to catch up and do the right thing, and strongly consider and minimize the potential negative impact on the environment."

The experts have been developing reusable silicone masks with filters that are disposable or can be sterilized after exposure as a way to reduce cost, environmental impact and as a response to short supplies. 

Ultimately, the researchers envision a system like this becoming more widespread as a way to protect people with less environmental impact and fincancial cost.  

"Masks are here to stay for the foreseeable future, so it's critical that we incorporate sustainability into their use, as well as the use of other disposable personal protective equipment that contribute to medical waste," said study lead author Dr. Jacequline Chu.

The study is published in the <a href="https://bmjopen.bmj.com/">British Medical Journal Open</a>.

---

By <a href="http://zachfitzner@yahoo.com">Zach Fitzner</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

&nbsp;

Addressing the environmental impact of disposable masks

During the height of the COVID pandemic, and even now...

Coffee and caffeine in general have been suspected of causing heart arrhythmias, but the results of a new study suggest that this reputation is unwarranted. In fact, the research shows that coffee consumption may even lower the risk of arrhythmias and other common heart ailments. 

Study lead author Dr. Gregory Marcus is a professor of Medicine at <a href="https://www.ucsf.edu/">UCSF</a> who specializes in the treatment of heart arrhythmias.

"Coffee is the primary source of caffeine for most people, and it has a reputation for causing or exacerbating arrhythmias," said Dr. Marcus. "But we found no evidence that caffeine consumption leads to a greater risk of arrhythmias."

The research was focused on data in the UK Biobank involving 386,258 coffee drinkers - a larger sample size than any previous study of its kind. 

“Our population-based study provides reassurance that common prohibitions against caffeine to reduce arrhythmia risk are likely unwarranted," said Dr. Marcus.

The experts used genetics to account for people that naturally metabolize caffeine faster. Overall, they said that higher amounts of coffee were actually associated with a three percent reduced risk of developing an arrhythmia.

The study authors admit there are some limitations to their research. For example, self-reported data is not the most reliable. This means that even with a massive sample size, further research is needed to confirm the effect of coffee on heart health. Dr. Marcus still emphasizes the evidence found in the research. 

"Only a randomized clinical trial can definitively demonstrate clear effects of coffee or caffeine consumption...But our study found no evidence that consuming caffeinated beverages increased the risk of arrhythmia." 

"Coffee's antioxidant and anti-inflammatory properties may play a role, and some properties of caffeine could be protective against some arrhythmias."

The study is published in the journal <a href="https://jamanetwork.com/journals/jamainternalmedicine">JAMA International Medicine</a>.

---

By <a href="http://zachfitzner@yahoo.com">Zach Fitzner</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Coffee may lower the risk of heart problems

Coffee and caffeine in general have been suspected of causing...

A new study led by the <a href="https://www.bristol.ac.uk/">University of Bristol</a> has revealed that the health of a tsetse fly can be compromised by its mother's age and <a href="https://www.earth.com/news/mediterranean-diet-protects-the-brain-from-dementia/">diet</a>. The researchers found that female tsetse flies give birth to weaker offspring as they get older, or when they feed on poor quality blood.

The study was designed to measure how the health of tsetse offspring may be influenced by their mothers' age, nutrition, and mating. 

While the females of many species experience this type of reproductive aging, the actual point in life at which this occurs is greatly variable among different animals. 

In the current study, the experts found that female tsetse flies in a state of nutritional stress have lower levels of fertility and produce smaller offspring that struggle to survive. 

The study also showed, however, that the rate at which the female fly ages is not affected by the quality of her diet. This means that nutrition during pregnancy does not drive variation in reproductive aging in this particular species, explained the researchers.

"Tsetse are remarkable flies. Mothers can produce offspring the same size they are. But, like many other animals (including humans), this huge reproductive investment comes at a cost: as females get older or when they have low quality food, they produce weaker offspring which do not survive as long. We still do not know, however, why some females age more rapidly than others," explained study senior author Dr. Sinead English.

Going forward, the researchers will look at new ways to test evolutionary predictions about aging, using a new method of tracking the reproduction of individual flies.

"We are also interested in understanding these patterns in tsetse as they spread deadly parasites, called trypanosomes, to humans and animals," said Dr. English.

"By understanding how offspring survival depends on maternal nutritional stress and age, we can design better population dynamic and disease transmission models."

The study is published in the journal <a href="https://onlinelibrary.wiley.com/journal/14610248">Ecology Letters</a>.

---

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Older tsetse flies give birth to weaker offspring

A new study led by the University of Bristol has...

A growing collection of research shows that animals with much less complex minds than <a href="https://www.earth.com/news/humans-and-livestock-create-the-perfect-storm-for-pandemics/">humans</a> are surprisingly connected on a social level. A new study reveals that reef fish and other types of social fish depend on friendships for their very survival. 

Study lead author Dr. Lauren Nadler is an assistant professor in the (NSU) Halmos College of Arts and Sciences at the <a href="https://www.nova.edu/">Nova Southeastern University</a>.

"We studied how the presence of 'friends' versus 'strangers' affected how fish responded to a predator threat," said Dr. Nadler.

"The presence of 'strangers' seemed to distract fish, making them react more slowly and greatly increasing the chance that they would become lunch for a hungry predator when in the wrong social scene."

To investigate how familiarity may influence groups of social fish, the researchers focused on schooling coral reef fish.

Dr. Nadler and her colleagues believe that their results come down to trust. The experts found that reef fish rely on alerts from their trusted friends to avoid predators. 

According to the researchers, the fish must balance the risk of being attacked with the possibility of wasting their energy in response to inaccurate information. It appears that reef fish adjust their reactions to social information based on the level of familiarity in the group.

"Trust among individuals is critical. This is true for humans as well as many other species, including fishes," said study co-author Dr. Jacob Johansen of the University of Hawaii Manoa. 

"Our research in fishes shows that when accurate information transfer breaks down, so too does the chance of survival for the individual and the group as a whole."

The researchers found that the first fish to detect the predator exhibits the greatest amount of vigilance, and that the most useful information is shared among neighboring fish.

"Our work shows that readiness to react to a threat depends on who is around you, if you are a fish," said Dr. Paolo Domenici. "If you are in an unfamiliar social environment, this is already something you need to pay attention to. If you are surrounded by familiar individuals, then you will be able to pay attention to any external threat more readily."

The findings suggest that animals have evolved to associate with friends over strangers to promote survival in the wild. 

"Friendship networks matter, both for humans and for less evolved taxa like fishes," said Dr. Mark McCormick. "The more you can rely on your friends, the easier and more fulfilling your life will be."

The study is published in the journal <a href="https://www.nature.com/commsbio/">Communications Biology</a>.

---

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Depending on friends makes life easier for reef fish

A growing collection of research shows that animals with much...

In a new study from <a href="https://www.lancaster.ac.uk/">Lancaster University</a>, experts report that climate change threatens food security for millions of people in countries that depend the most on the fishing industry. The study revealed that the increasing strain of climate change and overfishing will impact the availability of micronutrients that come from our oceans.

The researchers analyzed the future distribution and abundance of more than 800 fish species in 157 countries. These fish are a critical source of omega-3 fatty acids, vitamin A, iron, zinc, and calcium. 

When it comes to the availability of these essential micronutrients from marine fish catches, the experts found that climate change poses the biggest threat.

The study reveals that climate change threatens the supply of vital micronutrients from fisheries in 40 percent of countries. The micronutrient supplies were found to be less vulnerable to overfishing.

Countries with micronutrient sources that are most at risk are tropical nations, including Malaysia, Cambodia, and Indonesia. The Sub-Saharan African countries of Mozambique and Sierra Leone were also found to be particularly at risk.

"As climate change and overfishing are significant and growing pressures on global fish stocks, it is essential for the dietary requirements of millions of people to know the extent that these pressures will have on the availability of micronutrients in our seas in the future," said study lead author Dr. Eva Maire.

"We have shown that climate change is the most pervasive threat to the supply of vital micronutrients for many countries around the world, and in particular in the tropics."

According to the researchers, some countries may be able to adapt their fisheries to switch from vulnerable species and instead target alternative micronutrient-rich species that are also resilient to both climate change and overfishing.

"As well as highlighting the growing threat of climate change to the food security of millions of people, our study also offers hope for the future," said study co-author Professor William Cheung from the University of British Columbia.

"Armed with nutritional information about different fish species, many countries have the capacity to adapt their fisheries policies to target different more resilient fish species. By doing this then these nations can ensure a more reliable supply of micronutrients for their people."

The study is published in the journal <a href="https://www.cell.com/current-biology/home">Current Biology</a>.

---

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Climate change threatens vital micronutrients from fisheries

In a new study from Lancaster University, experts report that...

An international team of <a href="https://www.earth.com/news/individual-corals-seen-engulfing-algae-for-the-first-time/">coral</a> scientists is calling on policy makers around the world to take action for the protection of coral reefs. New research presented at the International Coral Reef Symposium paints a bleak future for reefs.

Study co-author Andréa Grottoli, a professor of Earth Sciences at <a href="https://www.osu.edu/">Ohio State University</a>, explains the dire situation and the small window of opportunity for action.

"The model projections show that up to 30% of coral reefs will persist through this century if we limit global warming to 1.5 degrees Celsius," said Professor Grottoli.

"But if we are to limit warming to 1.5 degrees, we have to do it now: The science and the models show that we have only a few years left to reduce carbon dioxide emissions that put us on that path. It has to happen this decade, or we won't make that target."

Climate change is a huge threat to coral reefs, but it’s not the only challenge they face. 

"As bad as climate change has been for the last decades, we also have lost vast amounts of coral reefs through overfishing, pollution and other local actions, and we need to tackle both of those fronts simultaneously," said study first author Nancy Knowlton.

"Climate change is important but it's important that these other things aren't neglected. There's no time for arguing about which is most important; we need to do all of them."

Study co-author David Obura is the director of CORDIO East Africa, a coral reef and sustainability non-profit organization. He explained what needs to happen if the beauty and biodiversity of reefs are to continue to exist on Earth.

"The window for opportunities to act both on coral reef adaptation and on climate change mitigation will soon close for good," said Obura.

"We need a massive increase in commitment now and even more in coming years, coherence across all scales and jurisdictions, and innovation - new mindsets, approaches and techniques. More than anything we need everyone to act, including us scientists by providing our approaches and knowledge, to do our part in saving coral reefs."

The research was presented at the <a href="https://www.icrs2021.de/">International Coral Reef Symposium</a>.

---

By <a href="http://zachfitzner@yahoo.com">Zach Fitzner</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

The fate of coral reefs hangs in the balance

An international team of coral scientists is calling on policy...

Fresh,Tomato

New research published by <a href="https://www.frontiersin.org/">Frontiers</a> has found something very interesting. A certain variety of tomato has fruits that can use chemical and hormonal signaling to notify the rest of the plant when they're attacked by caterpillars. 

"We usually forget that a plant's fruits are living and semiautonomous parts of their mother-plants, far more complex than we currently think," said Dr. Gabriela Niemeyer Reissig of the Federal University of Pelotas.

"Since fruits are part of the plant, made of the same tissues of the leaves and stems, why couldn't they communicate with the plant, informing it about what they are experiencing, just like regular leaves do?"

"What we found is that fruits can share important information such as caterpillar attacks--which is a serious issue for a plant--with the rest of the plant, and that can probably prepare other parts of the plant for the same attack."

To study signaling of tomato plants, the researchers measured the electrical responses of the plant before, during and after herbivory by insects for a 24 hour period. The signals before and after the caterpillars munched on the tomatoes were different, showing that some sort of electrical signaling was taking place. 

The results showed an overall picture of signaling, not a narrow view of specific signals. However, the techniques used in the study can be replicated for a closer look in the future. Dr. Reissig is hopeful this study will lead to more research and important results,   

"If studies like ours continue to advance and the techniques for measuring electrical signals in open environments continue to improve, it will be possible to detect infestation of agricultural pests quite early, allowing for less aggressive control measures and more accurate insect management," said Dr. Reissig.

"Understanding how the plant interacts with its fruits, and the fruits among themselves, may bring insights about how to 'manipulate' this communication for enhancing fruit quality, resistance to pests and shelf life after harvest."

The study is published in the journal <a href="https://www.frontiersin.org/journals/sustainable-food-systems">Frontiers in Sustainable Food Systems</a>.

---

By <a href="http://zachfitzner@yahoo.com">Zach Fitzner</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Tomato fruit warns the rest of the plant when attacked

New research published by Frontiers has found something very interesting....

A new study from <a href="https://www.ucl.ac.uk/">University College London</a> has produced evidence that <a href="https://www.earth.com/news/adults-are-more-compassionate-when-children-are-nearby/">children</a> who live near woodlands have better cognitive development and a lower risk of emotional and behavioral problems. The research may ultimately influence planning decisions in urban areas.

"Previous studies have revealed positive associations between exposure to nature in urban environments, cognitive development and mental health. Why these health benefits are received remains unclear, especially in adolescents," said study lead author Mikaël Maes.

"These findings contribute to our understanding of natural environment types as an important protective factor for an adolescent's cognitive development and mental health and suggest that not every environment type may contribute equally to these health benefits."

"Forest bathing, for example (being immersed in the sights, sounds and smells of a forest), is a relaxation therapy that has been associated with physiological benefits, supporting the human immune function, reducing heart rate variability and salivary cortisol, and various psychological benefits. However, the reasons why we experience these psychological benefits from woodland remain unknown."

The study was focused on data involving 3,568 children and teenagers in 31 schools across London. The subjects ranged in age from 9 to 15, which is a key time in the development of thinking and reasoning.

The researchers used satellite data to estimate each child's daily exposure rate to "green spaces" such as woods, meadows and parks, and to "blue spaces" such as rivers, lakes, and the ocean. 

The goal was to examine the links between natural urban environments and and the children's cognitive development, mental health, and overall well-being.

The analysis revealed that higher daily exposure to woodland - but not grassland - was associated with higher scores for cognitive development. Wooded areas were also associated with a 16 percent lower risk of emotional and behavioral problems two years later. Other green spaces produced a similar effect.

"It's been suggested previously that the benefits of natural environments to mental health are comparable in magnitude to family history, parental age and even more significant than factors like the degree of urbanisation around you, but lower than your parents' socio-economic status," said study co-senior author Professor Mireille Toledano.

"Sensory and non-sensory pathways have been suggested as potentially important for delivering cognition and mental health benefits received from exposure to nature."

"It's critical for us to tease out why natural environments are so important to our mental health throughout the life course - does the benefit derive from the physical exercise we do in these environments, from the social interactions we often have in them, or from the fauna and flora we get to enjoy in these environments or a combination of all of these?"

Study co-senior author Professor Kate Jones said that one possible explanation for the findings may be that audio-visual exposure through vegetation and animal abundance provides psychological benefits. 

"Even though our results show that urban woodland is associated with adolescent's cognitive development and mental health, the cause of this association remains unknown," said Professor Jones. "Further research is fundamental to our understanding of the links between nature and health."

The study is published in the journal <a href="https://www.nature.com/natsustain/">Nature Sustainability</a>.

 ---

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Children who live near woodlands have better mental health

A new study from University College London has produced evidence...

A new study from the <a href="https://www.uq.edu.au/">University of Queensland</a> reveals the enormous <a href="https://www.earth.com/news/terrestrial-plants-changed-how-earth-regulates-its-climate/">climate</a> impact of wild pigs. The experts report that by digging around in the soil to find food, wild pigs are releasing 4.9 million metric tons of carbon dioxide each year. 

According to the researchers, the massive amount of CO2 emissions related to pigs worldwide is the equivalent of emissions from 1.1 million cars.

In collaboration with experts at the University of Canterbury, the researchers used predictive population models and advanced mapping techniques to pinpoint the climate damage caused by wild pigs across five continents.

Dr. Christopher O'Bryan said the globe's ever-expanding population of feral pigs could be a significant threat to the climate.

"Wild pigs are just like tractors ploughing through fields, turning over soil to find food. When soils are disturbed from humans ploughing a field or, in this case, from wild animals uprooting, carbon is released into the atmosphere," explained Dr. O'Bryan.

"Since soil contains nearly three times as much carbon than in the atmosphere, even a small fraction of carbon emitted from soil has the potential to accelerate climate change."

"Our models show a wide range of outcomes, but they indicate that wild pigs are most likely currently uprooting an area of around 36,000 to 124,000 square kilometres, in environments where they're not native."

"This is an enormous amount of land, and this not only affects soil health and carbon emissions, but it also threatens biodiversity and food security that are crucial for sustainable development."

Based on the number and locations of wild pigs, the team simulated 10,000 maps to represent their density on a global scale. The experts calculated the amount of CO2 emissions associated with soil damage by wild pigs based on previous research conducted in China, Europe, and America. 

Study co-author Nicholas Patton said the research may have help to curb the effects of climate change going forward.

"Invasive species are a human-caused problem, so we need to acknowledge and take responsibility for their environmental and ecological implications," said Patton.

"If invasive pigs are allowed to expand into areas with abundant soil carbon, there may be an even greater risk of greenhouse gas emissions in the future. Because wild pigs are prolific and cause widespread damage, they're both costly and challenging to manage."

"Wild pig control will definitely require cooperation and collaboration across multiple jurisdictions, and our work is but one piece of the puzzle, helping managers better understand their impacts."

"It's clear that more work still needs to be done, but in the interim, we should continue to protect and monitor ecosystems and their soil which are susceptible to invasive species via loss of carbon."

The study is published in the journal <a href="https://onlinelibrary.wiley.com/journal/13652486">Global Change Biology</a>.

---

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Climate damage by wild pigs is worse than a million cars

A new study from the University of Queensland reveals the...

Droughts and fires have released massive amounts of carbon from one of the most biodiverse forests on <a href="https://www.earth.com/news/methane-cycling-microbes-lived-on-earth-billions-of-years-ago/">Earth</a> all while killing untold billions of animals and plants. 

The 2015-16 El Niño caused an extreme drought that was a contributing factor in massive fires in the Amazon, killing roughly 2.5 billion trees and other plants, touching on only about 1.2% of the Amazon. In this relatively small portion of the forest, 495 million tons of carbon dioxide were released into the atmosphere.

Typically, the Amazon is too wet for much of it to burn, but the drought made the now drier forest vulnerable.

The research comes from an international team of researchers who have been working on the project for eight years. The findings do not bode well for the future. The researchers found that plants continued to die at high rates years after the end of the drought, showing that drier spells can have serious long term consequences. Fires also have a greater negative impact on the Amazon rainforest, a habitat that did not evolve with fire as did many forests in North America and elsewhere. 

The experts found that secondary forests had higher declines than the mature primary forests. This shows how disturbance of the forest is long term, even if the forest is allowed to recover. The research emphasizes the need to reduce illegal logging as much as possible for the survival of the Amazon region as well as for the Earth as a whole.

Unfortunately, droughts are expected to increase with the advent of climate change, meaning impacts from wildfires and humans will become amplified as drier rainforests will become more and more vulnerable. This hurts not only the Amazon, one of the world’s most magical places but also allows for the release of even more carbon from destroyed forest.  

"The results highlight the need for action across different scales," said principal investigator Professor Jos Barlow of <a href="https://www.lancaster.ac.uk/">Lancaster University</a>.

Internationally, we need action to tackle climate change, which is making extreme droughts and fires more likely. At the local level, forests will suffer fewer negative consequences from fires if they are protected from degradation."

The study is published in the journal <a href="https://www.pnas.org/">Proceedings of National Academy of Sciences</a>.

---

By Zach Fitzner, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Fires in the Amazon destroy billions of trees and vines

Droughts and fires have released massive amounts of carbon from...

Giant Galapagos tortoises that live in human-dominated <a href="https://www.earth.com/news/success-of-rewilding-efforts-depends-on-the-landscape/">landscapes</a> have increased levels of antibiotic resistance, according to a new study from the <a href="https://www.ucm.es/">Universidad Complutense de Madrid</a>.

The experts found that the number of bacteria with resistant genes was higher in tortoises who had human contact compared to those that live in more isolated ecosystems.

"Human activities are facilitating the dispersal of resistance into the environment, which has already been observed in other parts of the world, but which has never been demonstrated on the Galapagos Islands," said study lead author Ainoa Nieto.

According to the World Health Organization, antibiotic resistance is one of the biggest threats to public health. The WHO estimates that by 2050, resistance to antibiotics could cause more deaths than cancer, diabetes, or traffic accidents. 

The new study has detected antibiotic resistant bacteria in the Galapagos archipelago for the first time.

For their investigation, the researchers collected samples from 270 tortoises in two Galapagos sites with different characteristics - the island of Santa Cruz, which has the largest human population, and the remote volcano of Alcedo on the island Isabela.

Overall, 21 genes were analysed that codify resistance for eight of the antibiotic families most commonly used in human and animal medicine.

"We don't know the real implications that this discovery could have for the health of giant tortoises, but resistance is considered environmental pollution, and the fact that species as iconic as Galapagos tortoises are entering into contact with these resistant bacteria implies that the ecosystem in which they live is being contaminated," explained study co-author Casilda Rodríguez.

The researchers said their findings suggest that human activities in Galapagos have a negative impact on ecosystem health through the dispersal of antimicrobial resistant genes.

"This research highlights a new threat for the health and conservation of the unique wildlife of the Galapagos, their ecosystems, and the humans inhabiting this World Heritage Site," wrote the study authors.

"Our recommendation to local policy makers is to control and reduce the use of antibiotics in both human and animal health, thus helping enforce antimicrobial regulations."

The study is published in the journal <a href="https://www.journals.elsevier.com/environmental-pollution">Environmental Pollution</a>.

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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Antibiotic resistance found in giant tortoises of Galapagos

Giant Galapagos tortoises that live in human-dominated landscapes have increased...

Monarch butterflies in eastern North America are in a state of decline. Since the mid 1990’s, the monarch population that winters in Mexico and <a href="https://www.earth.com/news/painted-lady-butterflies-execute-the-longest-known-insect-migration/">migrates</a> to the northern US and Canada has dropped dramatically. 

Some scientists have estimated that existing monarch populations are only 20 percent of the number found a few decades ago. In a new study from <a href="https://msu.edu/">Michigan State University</a>, researchers think they might have a handle on why.

Between 2004 and 2018, the impact on monarch breeding grounds on populations was the most devastating. Other factors have played a role in the decline but it appears that the impact of climate change is seven times greater than other effects. 

"What we do is develop models to understand why monarchs are declining and what's happening to biodiversity in general," said study lead author Erin Zylstra.

"We did this study not just to say what's causing changes in the monarch butterfly population, but also learn how we can make it better."

&nbsp;

Glyphosate herbicides also coincided with some of the worst declines in monarch butterfly populations from the 90’s into the early 2000’s. One theory is that the wide use of this herbicide killed off a lot of milkweed, the only food source for monarch caterpillars. 

Still today, scientists are divided about the cause of monarch butterfly decline overall. The butterflies have a complex life history that makes it difficult to understand the underlying impacts on their population. With long, multi-generational migrations, there are many factors could hurt the butterflies. 

With the dedication of volunteers collecting butterfly data between 1994 and 2018, data gathered primarily by non-scientists in a very structured manner, researchers have a lot more to work with than they have before. The new research was focused on this data.

The experts determined that many factors from habitat destruction at wintering grounds and pesticide use to mortality during migration have contributed to the disappearance of monarchs. The researchers concluded that climate change has played the biggest role.   

"A lot of it is not good news. But in understanding the reasons why a species is declining, there is also a message of hope: there's something we can do about it," said Zylstra. "We did this study not just to say what's causing changes in the monarch butterfly population, but also learn how we can make it better."

The study is published in the July 19 issue of <a href="https://www.nature.com/natecolevol/">Nature Ecology &amp; Evolution</a>.

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By Zach Fitzner, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

&nbsp;

What’s happening with the eastern monarch butterfly?

Monarch butterflies in eastern North America are in a state...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Nushagak Bay, a large estuary in southwest Alaska. Nushagak runs mainly north to south and exits in Bristol Bay, a large body of water in the Bering Sea.



"The bay is primarily fed by the Nushagak River, which begins in the Alaska Range and flows southwest approximately 450 km. The bay is also fed by several additional rivers including the Wood, Igushik, Snake and Weary rivers," says ESA.



"The dark colors of the Nushagak River are most likely due to tannins or lignins (chemical substances found in plants). Tannins and lignins from roots, leaves, seeds, bark and soil can leach into the water and give it a brown or even black colour. The sediments then flow southwards where it is mixed with the bluer waters of the bay."



Video/ Image Credit: ESA



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Nushagak Bay in southwest Alaska

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Today's Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> (ACS) reveals that proteins on flu viruses are actually flexible, tilting and waving in a “breath-like” motion. According to the experts, these proteins could be used to better defend against the flu.



"The main antigenic targets of influenza virus are two surface glycoproteins, hemagglutinin (HA) and neuraminidase (NA). Whereas the structural and dynamical properties of both glycoproteins have been studied previously, the understanding of their plasticity in the whole-virion context is fragmented," wrote the researchers.



To investigate, the team conducted detailed simulations of the influenza A H1N1 virion, or the swine flu. The experts concluded that the visualizations show many new vulnerable states of flu viruses, which could improve future vaccines and antiviral drugs.



Video/ Image Credit: American Chemical Society&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Flu viruses are more flexible than expected

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Lake Trasimeno, which is located west of Perugia in central Italy. It is the fourth largest lake in the country. While Trasimeno’s water level varies, it has a maximum depth of approximately six meters.&nbsp;



"In this Copernicus Sentinel-2 image, captured on 6 August 2022, the lake’s emerald green colour is likely due to the presence of phytoplankton. Streaks in the water, particularly visible in the west, indicate the presence of soil and sediments which have been stirred up by winds. Dark colored waters in the southern part of the lake indicate a presence of submerged and floating macrophytes (aquatic plants) as well as algae," says ESA.



"Surrounded by hills on three sides, Trasimeno is subject to heavy storms created by winds, especially from the north and west. There are three islets in the lake: Maggiore, Minore and Polvese (the largest). The lake’s shores are sparsely inhabited with only two popular villages: Castiglione del Lago and Passignano sul Trasimeno."



"Italy is experiencing its worst drought in 70 years which has affected drinking water supplies, hydroelectric power and agricultural production. High temperatures, hot winds and lack of rainfall are the main causes of drought in the Umbrian region which saw Lake Trasimeno’s drop 1.3 m, reaching the limit of the hydrometric zero in July 2022."



Video/Image Credit: ESA&nbsp;



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Lake Trasimeno in Central Italy

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Today's Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> describes a new self-powered nanosensor that can instantly detect mercury contamination with the tap of a finger.&nbsp;



The oxidized form of mercury can be harmful when it is ingested through contaminated water or food. This makes it necessary for experts to develop sensors that can quickly and accurately detect the presence of mercury.&nbsp;



Zong-Hong Lin and colleagues have now created a triboelectric nanosensor (TENS) that can detect mercury by simply by touching a sample. According to the researchers, their TENS could serve as the basis for similar devices to safely and remotely monitor other pollutants.



Video Credit: American Chemical Society&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Detecting mercury contamination with the tap of a finger

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Kainji Lake, a reservoir on the Niger River.



In 1968, Kainji Lake was created by the construction of the Kainji Dam. The Niger River, the third longest in Africa, enters the lake in the north.&nbsp;



According to <a href="https://www.earth.com/news/rivers-in-the-american-west-are-a-lifesaving-resource-for-birds/">ESA</a>, the creation of the lake submerged Foge Island and the town of Bussa and permanently flooded other riverine settlements, leaving around 50,000 people displaced.&nbsp;



Large parts of Foge Island are temporarily exposed during low water tides, and the land is often used by migrating fishermen. Kainji Dam is a dam across the Niger River in Niger State of Central Nigeria. 



Wild mammals occur at relatively low densities due to illegal hunting. Lake Kainji has suffered a dramatic decline as a fishery due to the high numbers of artisanal and subsistence fisherfolk using the lake. It has been suggested that a period of closure, together with controlled fishing rights may help improve fish stocks.



Kainji Lake National Park is the oldest of its kind in Nigeria. The park contains three distinct areas: a part of the Kainji Lake, the Borgu Game Reserve to the west of the lake, and the Zugurma Game Reserve to the southeast. The park is home to around 65 mammal species, 350 bird species, and 30 species of reptiles and amphibians. 



Video/ Image Credit: European Space Agency&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Kainji Lake in north central Nigeria

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Today’s Video of the Day from <a href="https://www.igb.illinois.edu/">Carl R. Woese Institute for Genomic Biology</a> reveals how scientists can modify common crops like soybean, rice, and wheat to protect them from heat stress.



“We need to double crop production by 2050 to feed a growing global population, and not only are we not on track to do that, but climate change is further complicating things,” said Amanda Cavanagh, a lecturer at the University of Essex. 



The study is part of Realizing Increased Photosynthetic Efficiency (RIPE), an international research project that aims to develop food crops that turn the sun’s energy into food more efficiently.



“Using an engineering approach we designed multiple alternative metabolic pathways to photorespiration. Testing them in the field showed increases in productivity which led Amanda to significantly move the project forward by showing our engineered plants can withstand pretty extreme temperature stress,” said study co-author and RIPE researcher Paul South.&nbsp;



“As the climate changes and temperature stresses increase the pressure on our global food supply, farmers will need every tool available including engineering approaches like the synthetic biology used here to maintain safe and productive harvests.”



The experts tested plants modified to have more efficient photorespiration to see if they were better adapted to warmer temperatures.&nbsp;



The team found that the engineered plants produced 26 percent more biomass than the wild-type plants exposed to the same temperatures, and had 15 percent less yield loss under the higher temperatures.



Video Credit: Amanda Nguyen/University of Illinois



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Designing crops that can beat the heat

[sendtonews key="QGPzYnXEtN-1712599-12187" type="single"] Today’s Video of the Day from Carl...

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Today’s Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> explores the ability of salt to transform the way that foods and beverages taste. Salt is known to cover up undesirable flavors, such as bitterness in coffee or beer, but how exactly does sodium chloride change the taste of other compounds?



One previous study showed that, not only does salt suppress bitterness, but also enhances sweetness and sourness. Another study revealed that bitterness reduction by salt seems to be happening at the tongue receptor level as well as in the brain.&nbsp;



While it is known that salt taste is mediated by the presence of sodium channels in the form of taste buds, experts believe that there is also an unknown receptor responsible for how we taste salt that has not yet been identified.&nbsp;



Video Credit: ACS Reactions



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

How does salt makes things taste better?

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Santiago, the capital city of Chile. The city is located in the center of the Santiago Metropolitan Region, which has a population of about eight million people.&nbsp;



'The weather of Santiago resembles the Mediterranean climate with dry and warm summers with temperatures reaching up to 35°C (from October to March) and cool and humid winters that can drop to 0°C (from April to September)."



"The city lies in the centre of the country’s central valley around 80 km from the Pacific Ocean to the west and borders Argentina to the east. A tiny part of Argentina is visible in the top-right corner of the image where the mountain crest of the Andes Mountains acts as a divider between the two countries," says ESA.



Video/ Image Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Santiago, Chile in South America

[sendtonews key="JRaP49ISmm-2357509-12187" type="single"] Today’s Video of the Day from the...

Spiral,Galaxy,,Illustration,Of,Milky,Way

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Astronomers at <a href="https://www.jhu.edu/">Johns Hopkins University</a> have created an interactive map of the universe, including the actual position and real colors of 200,000 galaxies. The map allows the public to access data that was previously only available to scientists.



The map was developed using data collected by the Sloan Digital Sky Survey. For over two decades, a telescope in New Mexico was aimed at slightly different locations to capture the night sky.&nbsp;



"Growing up I was very inspired by astronomy pictures, stars, nebulae and galaxies, and now it's our time to create a new type of picture to inspire people," said map creator Brice Ménard, a professor at Johns Hopkins. "Astrophysicists around the world have been analyzing this data for years, leading to thousands of scientific papers and discoveries. But nobody took the time to create a map that is beautiful, scientifically accurate, and accessible to people who are not scientists. Our goal here is to show everybody what the universe really looks like."



"In this map, we are just a speck at the very bottom, just one pixel. And when I say we, I mean our galaxy, the Milky Way which has billions of stars and planets. We are used to seeing astronomical pictures showing one galaxy here, one galaxy there or perhaps a group of galaxies. But what this map shows is a very, very different scale."



"From this speck at the bottom, we are able to map out galaxies across the entire universe, and that says something about the power of science."



The <a href="https://mapoftheuniverse.net/">interactive map</a> is available online, where it can be downloaded for free.



Video Credit: Johns Hopkins&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Interactive map of the universe includes 200,000 galaxies

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes the first comprehensive estimate of carbon density in the Saharan, Sahel, and Sudanian zones of Africa. In an effort to measure the amount of carbon stored across these drylands, a team of scientists used high-resolution satellite images and artificial intelligence to map nearly 10 billion individual trees. 



"The high spatial resolution (50 cm) combined with AI and field measurements used in this study is key to improving tree inventories in drylands," said Pierre Hiernaux, a French researcher working for NASA. "The ever-increasing availability of very high-resolution satellite imagery will make it possible to assess carbon pools and their dynamics at the individual tree level on a global scale."



"This study is exceptional because it is pioneering a type of approach that will revolutionize the monitoring of trees and forests on a global scale: in the short term, it will be possible to map the world's trees from the centre of the Amazon to our schoolyards," said <a href="https://www.inrae.fr/en">INRAE</a> researcher Jean-Pierre Wigneron.



"Many fields of application will become much more efficient and accurate, such as tracking carbon stocks, biodiversity, monitoring logging and protection against illegal forest degradation, in near real time.”



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Remote sensing will revolutionize the way we monitor trees

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Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Dublin, the capital and largest city of Ireland. Beyond its pub culture, Dublin is known as a modern culinary destination and a UNESCO City of Literature.



"Dublin is located near the midpoint of Ireland’s east coast in the province of Leinster. The city, which covers an area of around 115 square kilometers, is bordered by the Dublin Mountains, a low mountain range to the south, and is surrounded by flat farmland to the north and west," says ESA.



"The city straddles the River Liffey, which rises in the Wicklow Mountains and flows around 80 kilometers eastwards through the city of Dublin, in which it is canalised and bordered with quays. It then empties into Dublin Bay, an arm of the Irish Sea."



Dublin has an abundance of green spaces, including one of the largest enclosed public parks in any European capital city. Phoenix Park, which was originally formed as a royal hunting park in the 1660s, includes 707 hectares of green space.



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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The city of Dublin on Ireland's east coast

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Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the province of Zaragoza in northeast Spain. The image was captured by the Copernicus Sentinel-2 mission.



"Together with the provinces of Huesca and Teruel, Zaragoza formed the old kingdom of Aragon. Its capital, also called Zaragoza (not visible in this image) is home to around half of Aragon’s population," says ESA.



"The Ebro River can be seen winding its way through the province from west to east in this image. Between its source in the Cantabrian Mountains in the northwest and its delta on the Mediterranean coast, the Ebro River is fed by more than 200 tributaries as it flows 910 km across much of northern Spain."



Since rainfall is very scarce in this region, irrigation in the Ebro basin is critically important. In the valleys surrounding the Ebro River, many fields are used for growing crops such as corn, wheat, and barley.



Video/ Image Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

The province of Zaragoza in northeast Spain

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> features a visual dataset of.methane emissions from wetlands across the globe. Atmospheric methane levels have reached record highs in recent years, and wetlands are a major source of these emissions.&nbsp;



"Methane is an important greenhouse gas that contributes substantially to global warming. On a molecule by molecule basis, methane is much more efficient at trapping heat than carbon dioxide, the main driver of warming," says NASA.



"Though human activities, including agriculture, oil and natural gas production and use, and waste disposal, collectively contribute the majority of methane to the atmosphere, about a third of total methane emissions comes from wetlands."&nbsp;



According to NASA, understanding methane emissions from wetlands and other natural sources is critically important for scientists and policymakers who are working to combat climate change by reducing emissions from human activities.



Video Credit: NASA Goddard



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Wetlands are a major source of methane emissions

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> reveals the evolution of the Columbia Glacier in southeastern Alaska. Columbia is among the fastest shrinking glaciers in the world, and the video documents its rapid retreat over the years.&nbsp;



Columbia Glacier is a large, multi-branched calving glacier that flows out of the Chugach Mountains to the Prince William Sound.&nbsp;



According to USGS, Columbia had a long history of stability prior to 1980, with a length 41 miles, and small, short-lived advances or retreats.



In the years since 1980, however, satellite images have captured Columbia’s alarming retreat. By using false-color images, scientists can distinguish between snow and ice, open water, vegetation, and rocky debris on the glacier’s surface.



The series of false-color images featured in today's video were acquired over the span of 35 years. You can see that by 2021, the glacier’s main branch had retreated about 15 miles from its initial position.



The Columbia Glacier has also lost more than 50 percent of its volume, mostly due to calving. <a href="https://www.earth.com/video/nasa-reveals-3d-visual-of-an-atmospheric-river/">NASA</a> reports that while climate change likely started the retreat, mechanical processes kept the disintegration going.



The NASA images are provided by Jesse Allen, Robert Simmon, Joshua Stevens, and Lauren Dauphin using data from Landsat satellites, from the U.S. Geological Survey, and data from MODIS on NASA’s Terra satellite. The structure of Columbia’s moraine played a large role in the stability of the glacier before 1980. 



Like other tidewater glaciers, the Columbia built up a moraine over time, and the mixture of ice and rock functioned like a dam keeping out the sea. It was supported on one end by the shoreline and by the underwater terminal moraine at the other.



Video Credit: NASA Earth Observatory/&nbsp; NASA’s Scientific Visualization Studio



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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The rapid retreat of the Columbia Glacier

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the Pyrenees Mountains, which form a natural boundary between France and Spain in southwest Europe.



The mountain range is 430 kilometers in length. It stretches from the Mediterranean Sea on the east to the Atlantic Ocean on the west.



At an elevation of 3404 meters, Pico de Aneto is the highest mountain peak in the Pyrenees, and the third-highest peak in Spain. Pico de Aneto is located in the Posets-Maladeta Natural Park, which spans more than 82,000 acres.&nbsp;



"Geological studies have revealed that the Pyrenees Mountains have been around for longer than the Alps, with their sediments first deposited in coastal basins during the Paleozoic and Mesozoic eras," reports ESA.



"The entire mountain range formed due to the upwelling of large sedimentary rocks by the collision of the Iberian and the Eurasian plate around 100 to 150 million years ago, followed by intense erosion from ice and water."



The western Pyrenees receive more precipitation due to moisture blowing in from the Atlantic Ocean. The mountain range contains many lakes, several small glaciers, and some of the highest waterfalls in Europe.



Video &amp; Image Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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The Pyrenees Mountains in southwest Europe

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Today’s Video of the Day from <a href="https://www.stowers.org/">Stowers Institute for Medical Research</a> describes why experts are studying zebrafish to gain a better understanding of how the immune system responds to injury. Zebrafish have the ability to repair and regenerate organs.



“Organ regeneration offers an exciting opportunity for studying the immune system and to inquire why some species can regenerate organs like the heart or missing limbs while others like humans cannot,” explained Dr. Tatjana Piotrowski.



Zebrafish sensory organ hair cells are an ideal system to investigate the pathways and cell types involved in regeneration since they are easily destroyed with antibiotics and begin regenerating within five hours. This enabled the researchers to identify the exact timing and genetic programs for each anti-inflammatory macrophage activation state.&nbsp;



“Our hypothesis is that human macrophages do not receive the proper chemical activation 'cocktail' to instruct pro-regenerative processes,” said Dr. Nicolas Denans. “Identifying the molecular recipe of macrophage activation in zebrafish may one day enable us to design regenerative immunotherapies in humans.”&nbsp;&nbsp;&nbsp;



“The new evidence is a valuable resource for comparative studies on the genetic programs involved in macrophage-mediated repair and regeneration. In other words, different types of injuries may induce different kinds of inflammatory responses. We want to decipher whether this 'language' is universal or if there are a variety of dialects."



Video Credit: Stowers Institute for Medical Research&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

How the immune system responds to injury

[sendtonews key="0dEcERCq61-2283382-12187" type="single"] Today’s Video of the Day from Stowers...

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes how record-breaking heat expressed itself around the world in 2022.



Scientists have determined that 2022 was the 5th warmest year since 1880. Furthermore, the last nine consecutive years have been the warmest on record.



From devastating floods and wildfires to natural disasters like Hurricane Ian, 2022 showed us yet again how a warming climate affects people across the globe.&nbsp;



"As we look back at 20:22 and years past, we see that each year we better understand the challenges we face and how important it is to meet them," says NASA.



Video/ Image Credit: NASA Goddard



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

2022 illustrated the consequences of a warming climate

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Earth,Like,Exoplanet,3d,Render

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes two exoplanets that are orbiting a star 218 light-years away. A team of researchers led by the University of Montreal has found evidence that these planets are "water worlds."



The experts used data from NASA’s Hubble and Spitzer Space Telescopes. They discovered that exoplanets Kepler-138 c and Kepler-138 could be composed largely of water.



"We previously thought that planets that were a bit larger than Earth were big balls of metal and rock, like scaled-up versions of Earth, and that's why we called them super-Earths," explained study co-author Björn Benneke.&nbsp;



"However, we have now shown that these two planets, Kepler-138 c and d, are quite different in nature and that a big fraction of their entire volume is likely composed of water. It is the best evidence yet for water worlds, a type of planet that was theorized by astronomers to exist for a long time."



Video Credit: NASA Goddard



Image Credit: NASA, ESA, and Leah Hustak (STScI)



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Two distant planets may be "water worlds"

[sendtonews key="QIoVYJqRBi-2434608-12187" type="single"] Today's Video of the Day from NASA...

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Satellites reveal how Earth's systems are interconnected Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes Earth’s interconnected systems, and how this network is affected by rising temperatures.&nbsp;



During 2020, average global temperatures matched the hottest year on record. The hurricane season was also record-breaking, with many of the storms intensifying at extraordinary speeds. Hot water in the ocean is fuel for hurricanes. The satellite data shows that it's all one interconnected system showing how Satellites reveal how Earth's systems are interconnected.



According to NASA, dust swept up from Northern Africa plays a major role in the formation of hurricanes, and is also a key source of fertilization in the Amazon rainforest. As a result of<a href="https://www.earth.com/news/seagrass-wasting-disease-is-fueled-by-climate-change/"> climate</a> change, dust plumes are expected to decline, which will have an effect on vegetation far away.&nbsp;



Images from Earth-observing satellites show how the world’s plant life is affected by natural disasters, fires, and deforestation. Satellites also reveal how widespread changes in vegetation impact waterways,&nbsp; the climate, air quality. Satellites communicate by using radio waves to send signals to the antennas on the Earth. "Earth From Space" is a groundbreaking two-hour special that reveals a spectacular new space-based vision of our planet. 



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Satellites reveal how Earth's systems are interconnected

[sendtonews key="JbW4VsY53O-1632195-12187" type="single"] Satellites reveal how Earth's systems are interconnected...

Today’s Video of the Day from the <a href="https://welcome.miami.edu/">University of Miami</a> Rosenstiel School of Marine and Atmospheric Science explores how changes in water temperatures have affected tiger shark habitats and movements in the North Atlantic Ocean. The study reveals that rising temperatures have caused the sharks to shift toward the poles over the past 40 years.



“Tiger shark annual migrations have expanded poleward, paralleling rising water temperatures,” explained study lead author Neil Hammerschlag. “These results have consequences for tiger shark conservation, since shifts in their movements outside of marine protected areas may leave them more vulnerable to commercial fishing.”



The researchers analyzed nine years of tracking data from satellite-tagged tiger sharks, combined with four decades of conventional tag and recapture data provided by National Oceanic and Atmospheric Administration (NOAA) Cooperative Shark Tagging Program.



The experts found that during the last decade of record heat, for every one-degree Celsius increase in water temperatures, tiger sharks migrated further poleward by over 400 kilometers. They also migrated two weeks earlier than usual to waters off the northeastern coast of the United States.



“Given their role as apex predators, these changes to tiger shark movements may alter predator-prey interactions, leading to ecological imbalances, and more frequent encounters with humans,” concluded Professor Hammerschlag.



Video Credit: University of Miami Rosenstiel School of Marine and Atmospheric Science



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Tiger sharks are shifting poleward as temperatures rise

Today’s Video of the Day from the University of Miami...