Egyptian rituals have long captivated the imaginations of scholars and enthusiasts alike, and a recent breakthrough has demystified some of their most mysterious aspects.



In an incredible leap forward for archaeology and anthropology, a new study has provided tangible proof that the use of hallucinogenic mixtures was an integral part of this ancient civilization's sacred practices.



The physical evidence of hallucinogens was found in an Egyptian Bes mug, a rare relic stored in a collection at the Tampa Museum of Art.



These curious objects are distinctively adorned with the ferocious face of Bes, a protective deity linked to everything from fertility to magical healing.



<h2 class="wp-block-heading" id="h-tracing-the-roots-of-ritualistic-practices">Tracing the roots of ritualistic practices</h2>



This research didn't materialized overnight. The role of the Bes mugs in ancient Egyptian society has been a topic of debate for a long stretch of time.



“For a very long time now, Egyptologists have been speculating what mugs with the head of Bes could have been used for, and for what kind of beverage, like sacred water, milk, wine or beer,” noted Branko van Oppen, a museum curator at the Tampa Museum of Art.



The ubiquity of the mugs throughout different epochs made it tough to pinpoint their exact use and significance.



The cryptic puzzle finally began to fall into place when researchers from the <a href="https://www.usf.edu/" target="_blank" rel="noreferrer noopener">University of South Florida</a> embarked on an ambitious project to explore the unknown.



“There’s no research out there that has ever found what we found in this study,” said Davide Tanasi, lead author of the research paper that presents the findings.



The team managed to dissect the chemical signatures of a long-dried liquid inside one of the Tampa Museum's Bes mugs, providing a concrete clue to its past use.



<h2 class="wp-block-heading" id="h-the-secret-concoction-used-in-egyptian-rituals">The secret concoction used in Egyptian rituals</h2>



The result was nothing short of astounding. The researchers discovered a blend of <a href="https://www.earth.com/news/psychedelic-drugs-secreted-from-toad-skin-greatly-improve-cognitive-functioning/" target="_blank" rel="noreferrer noopener">psychedelic drugs</a>, bodily fluids, and alcohol inside the mug - a 'cocktail' likely used in a ritual re-enacting an Egyptian myth.



The mysterious brew was sweetened with popular ingredients of the time like honey, sesame seeds, pine nuts, licorice, and grapes, quite possibly to mimic the appearance of blood.



<h2 class="wp-block-heading" id="h-a-glimpse-into-ancient-life">A glimpse into ancient life</h2>



This astounding find has brought to life vivid images of the Greco-Roman period in <a href="https://www.earth.com/news/egypts-pyramids-were-built-along-a-buried-branch-of-the-nile-river/" target="_blank" rel="noreferrer noopener">Egypt</a>. 



The historical significance of the discovery underlines the importance of the Bes Chambers at Saqqara, a site apparently frequented by individuals hoping to confirm a successful pregnancy - a perilous phase in the ancient world.



“Egyptologists believe that people visited the so-called Bes Chambers at Saqqara when they wished to confirm a successful pregnancy because pregnancies in the ancient world were fraught with dangers," explained Van Oppen. 



He believes the special brew was likely used in a dream-vision inducing ritual during this fraught period.



This unusual study has helped us connect the dots between myths and reality.



“With this study, we’ve found scientific proof that the Egyptian myths have some kind of truth and it helps us shed light on the poorly understood rituals that were likely carried out in the Bes Chambers in Saqqara, near the Great Pyramids at Giza,” explained Tanasi.



Thus, the shroud of mystery surrounding ancient Egyptian rituals is gradually lifting, one artifact at a time.



<h2 class="wp-block-heading" id="h-symbolism-of-bes-in-egyptian-rituals">Symbolism of Bes in Egyptian rituals</h2>



The discovery of <a href="https://www.earth.com/news/peruvian-empire-kept-control-with-beer-and-hallucinogens/" target="_blank" rel="noreferrer noopener">hallucinogenic substances</a> within the Bes mug not only sheds light on the practices of ancient Egyptian rituals but also emphasizes the cultural weight carried by Bes, the deity represented on the artifact. 



Known for his lion-like visage and protective nature, Bes held an essential place in daily life and spiritual practices. He was not just a guardian deity; he was seen as a figure that could ward off evil spirits, promote <a href="https://www.earth.com/news/mediterranean-diet-improves-sperm-quality-and-fertility/" target="_blank" rel="noreferrer noopener">fertility</a>, and bring joy through music and dance.



In ancient Egypt, rituals involving Bes were believed to harness his powerful essence, particularly in times of vulnerability, such as childbirth and healing. 



The presence of hallucinogenic elements in the brew suggests that these ceremonies aimed to elevate participants' consciousness and induce a trance-like state for divine communication or visionary experiences.



Such practices aligned with the belief that connecting with deities like Bes could provide spiritual protection and guidance.



This new understanding of Bes' involvement in these rituals deepens our appreciation for how ancient <a href="https://www.earth.com/news/mystery-how-ancient-egyptians-built-pyramids-djoser-may-be-solved/" target="_blank" rel="noreferrer noopener">Egyptians</a> intertwined the mystical with the tangible, creating sacred ceremonies that reflected their belief in the interconnectedness of the human and divine realms.



The study was published in the journal <a href="https://search.app?link=https%3A%2F%2Fwww.nature.com%2Farticles%2Fs41598-024-78721-8&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">Scientific Reports</a>.



Image Credit:&nbsp;Scientific Reports&nbsp;(2024).



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Hallucinogens were used in ancient Egyptian rituals

Egyptian rituals have long captivated the imaginations of scholars and enthusiasts alike, and a recent breakthrough has demystified some of their most mysterious aspects. In an incredible leap forward for archaeology and anthropology, a new study has provided tangible proof that the use of hallucinogenic mixtures was an integral part of this ancient civilization's sacred practices. The physical evidence of hallucinogens was found in an Egyptian Bes mug, a rare relic stored in a collection at the Tampa Museum of Art. These curious objects are distinctively adorned...

A new study found that eating garlic can combat age-related changes in gut bacteria that are associated with <a href="http://www.earth.com/news/moving-older-adults-preserve-memory/">memory issues</a>. These health benefits come from a compound in garlic called allyl sulfide.

"Our findings suggest that dietary administration of garlic containing allyl sulfide could help maintain healthy gut microorganisms and improve cognitive health in the elderly," said co-lead researcher Jyotirmaya Behera, PhD, from the <a href="http://louisville.edu/">University of Louisville</a>.

The team set out to better understand how the gut microbiota — that being the collective term for the trillions of gut microorganisms — changes with age and how it may be linked to other age-related health issues.

"The diversity of the gut microbiota is diminished in elderly people, a life stage when neurodegenerative diseases such as Alzheimer's and Parkinson's develop and memory and cognitive abilities can decline," said co-author Neetu Tyagi, PhD, also from the University of Louisville. "We want to better understand how changes in the gut microbiota relate to aging-associated cognitive decline."

Behera, Tyagi, and their team fed allyl sulfide to 24-month-old mice, which correlates to humans aged 56 to 69. These mice were compared to controlled 4-month- and 24-month-old mice who were not taking oral allyl sulfide.

The older mice taking allyl sulfide showed better short- and long-term memory, spatial memory, and overall gut health than the older mice not taking the allyl sulfide.

Researchers found via further experimentation that reduced gene expression of neuronal-derived natriuretic factor (NDNF) in the brains of older mice not taking allyl sulfide is to blame for their cognitive decline. Mice who were consuming allyl sulfide showed higher levels of NDNF gene expression. NDNF was just recently discovered by scientists at the University of Louisville and is pertinent to long-term and short-term memory consolidation.

Furthermore, the team found that when mice were fed allyl sulfide, hydrogen sulfide gas was produced in the gut lumen. This gas acts as a messenger molecule that prevents intestinal inflammation. Therefore, the researchers believe that by restoring gut health, the allyl sulfide in garlic promotes memory consolidation.

More experimentation is needed to better understand gut health and memory, however this new information could potentially lead to garlic being used as a memory treatment within the aging human population.

These findings will be shared at the <a href="http://www.the-aps.org/">American Physiological Society</a> annual meeting during the <a href="https://experimentalbiology.org/2019/home.aspx">2019 Experimental Biology meeting</a>, which runs from April 6th to April 9th in Orlando, Florida.

--

By <a href="mailto:oliviagharvey24@gmail.com">Olivia Harvey</a>, <a href="http://earth.com">Earth.com</a> Staff Writer

Garlic can enhance memory by improving gut health

A new study found that eating garlic can combat age-related...

Aerobic exercise boosts cognitive ability even for young people. Aerobic exercise can help slow age-related declines in cognition, goal-setting, and problem-solving for adults, according to new research.

Studies have shown that exercise has many positive benefits including <a href="https://www.earth.com/news/exercise-reduces-cancer-risk/#">decreasing cancer risk</a>, and improving overall health and wellbeing. But now, researchers from <a href="https://www.columbia.edu/">Columbia University</a> found aerobic exercise, in particular, can help improve executive function even in young adults starting at age 20.

Executive function refers to a set of cognitive processes that are key to planning and achieving goals and day-to-day to tasks.

Previous research had found that aerobic exercise benefits the elderly, but this is one of the first studies of its kind to prove that the benefits apply to all ages and could serve as a preventive measure against age-related mental decline.

132 individuals with below average aerobic abilities aged 20 to 67 participated in the study and the researchers assigned the participants to either an aerobic exercise training program of their choice or a core-strengthening program.

The participants worked out at a local YMCA four times a week while wearing heart rate monitors. The researchers also tested each participant’s executive function abilities, attention, language, and episodic memory.

After 24 weeks, the participants who assigned the aerobic exercise regime showed significant improvement in executive function, and although all age groups had increased executive function, the benefits were more significant for the older age groups.

Brain scans also showed that aerobic exercise increased the amount of gray matter in the brain.

The results, published in the journal Neurology, show that regular aerobic exercise could help combat mental declines and improve deteriorated mental processes.

“Executive function usually peaks around age 30,” said Yaakov Stern, the leader of the study. “and I think that aerobic exercise is good at rescuing lost function, as opposed to increasing performance in those without a decline.”

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By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Aerobic exercise boosts cognitive ability even for young people

Aerobic exercise boosts cognitive ability even for young people. Aerobic...

Why sleep deprivation spells out bad news for your gut. Individuals who work night shifts, travel across time zones, or struggle with <a href="http://www.earth.com/news/insomnia-heart-failure-stroke/">sleep deprivation</a> tend to become overweight and experience gut inflammation. 

However, scientists have not been able to find the physical link between odd sleep patterns and gut health until now. 

A group of researchers from the <a href="http://first.fchampalimaud.org/en/the-foundation/champalimaud-centre-unknown/">Champalimaud Centre for the Unknown</a> in Lisbon have discovered that the function of a grouping of immune cells, known to be influencers of gut health, is directly controlled by the brain’s circadian clock, which is dependent on the daylight cycle.

"Sleep deprivation, or altered sleep habits, can have dramatic health consequences, resulting in a range of diseases that frequently have an immune component, such as bowel inflammatory conditions,” said lead researcher Henrique Veiga-Fernandes. "To understand why this happens, we started by asking whether immune cells in the gut are influenced by the circadian clock."

As the researchers explain, almost all the cells within the body follow the circadian rhythm through expression of “clock genes,” which inform cells of the time of day and therefore help organs and bodily systems to function properly and anticipate sleep, eating, and other daily necessities.

Although these clock genes are autonomous, they still must be synchronised in order to work properly. 

"The cells inside the body don't have direct information about external light, which means that individual cell clocks can be off,” Veiga-Fernandes said. "The job of the brain's clock, which receives direct information about daylight, is to synchronise all of these little clocks inside the body so that all systems are in synch, which is absolutely crucial for our wellbeing.”

Upon analyzing the types of immune cells present in the intestine, the researchers discovered that Type 3 Lymphoid Cells (ILC3s) are particularly susceptible to upsets to the clock genes. 

"These cells fulfill important functions in the gut: they fight infection, control the integrity of the gut epithelium and instruct lipid absorption,” said Veiga-Fernandes. "When we disrupted their clocks, we found that the number of ILC3s in the gut was significantly reduced. This resulted in severe inflammation, breaching of the gut barrier, and increased fat accumulation."

Having seen this reaction, the team needed to investigate why the number of ILC3s in the gut is directly affected by the brain’s circadian clock. Upon analyzing how disrupting the circadian clock influenced the expression of different genes in ILC3s, the team found that the “molecular zip code” was missing.

ILC3s need to express a protein on their membrane, which acts as a molecular zip code, as the researchers explained. This zip code instructs ILC3s where to migrate. When the brain’s circadian input is not present, the ILC3s could not express this zip code, and therefore, could not reach their final destination.

"This mechanism is a beautiful example of evolutionary adaptation,” Veiga-Fernandes said. "During the day's active period, which is when you feed, the brain's circadian clock reduces the activity of ILC3s in order to promote healthy lipid metabolism. But then, the gut could be damaged during feeding. So after the feeding period is over, the brain's circadian clock instructs ILC3s to come back into the gut, where they are now needed to fight against invaders and promote regeneration of the epithelium."

"It comes as no surprise then, that people who work at night can suffer from inflammatory intestinal disorders,” he continued. “It has all to do with the fact that this specific neuro-immune axis is so well-regulated by the brain's clock that any changes in our habits have an immediate impact on these important, ancient immune cells."

"The concept that the nervous system can coordinate the function of the immune system is entirely novel,” he concludes. “It has been a very inspiring journey; the more we learn about this link, the more we understand how important it is for our wellbeing and we are looking forward to seeing what we will find next.”

This breakthrough is published in <a href="https://www.nature.com/articles/s41586-019-1579-3">Nature</a>.

--

By <a href="mailto:oliviagharvey24@gmail.com">Olivia Harvey</a>, <a href="http://earth.com">Earth.com</a> Staff Writer

Image Credit: Shutterstock/elwynn

Why sleep deprivation spells out bad news for your gut

Why sleep deprivation spells out bad news for your gut....

ImageJ=1.52n
unit=u00B5m

Experts identify a protein that may be the key to healthy aging. In a groundbreaking new study, researchers at the <a href="https://www.mdc-berlin.de/">Max Delbrueck Center for Molecular Medicine</a> (MDC) have identified a protein that has a major influence on healthy <a href="http://www.earth.com/news/gut-microbiome-promotes-healthier-aging/">aging</a> by supporting muscle strength and lifespan. 

The experts found that animals lacking the protein LIN-53 have severe muscle defects and limited mobility. A deficiency of LIN-53 was also linked to premature death. 

In the Gene Regulation and Cell Fate Decision Lab, a team led by Dr. Baris Tursun investigated the function of LIN-53 in roundworms. The findings may ultimately lead to studies on the human version of the protein.

"Identifying the genetic factors that play a role in linking lifespan and healthspan is key for understanding human health and aging-related diseases such as muscular dystrophy," said Dr. Tursun. 

LIN-53 binds to molecules called histones that are wrapped tightly inside of long DNA strands within the cell nucleus. Histone modifications can turn gene expression levels up or down, ultimately affecting the development, function, and lifespan of an organism. 

Because of its interaction with histones, LIN-53 is considered an "epigenetic factor," which can influence the activation and deactivation of gene expression without changing the underlying DNA sequence.

The researchers set out to determine whether LIN-53 has an influence on the lifespan and healthspan of an organism. The team also wanted to learn if lifespan and healthspan are directly related.

"Usually when we age, we experience aging symptoms accompanied by muscle loss," explained Dr. Tursun. "Is this all coincidence or is it linked, and if so, how it is linked? Our paper is one of the first to show an epigenetic link."

When the researchers knocked out the gene for LIN-53 in Caenorhabditis elegans, this affected the roundworm's ability to move and shortened its lifespan. LIN-53 affected muscle development through the molecular complex NuRD, yet affected lifespan through a separate complex, Sin3. 

According to the experts, the fact that these distinct pathways both involve LIN-53 strongly indicates that the protein is a link between healthspan and lifespan.

"LIN-53 is part of seven different molecular complexes regulating chromatin modification and structure," said study first author Stefanie Müthel. "I was surprised and excited that we were able to clearly define the complexes important for healthspan and lifespan."

"We all want to age in a healthy manner," said Dr. Tursun. "Once we understand the links between aging and all the accompanying detrimental effects, then we can begin to think about how to unlink them."

The study is published in the journal <a href="https://onlinelibrary.wiley.com/journal/14749726">Aging Cell</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: Tursun Lab, MDC

Experts identify a protein that may be the key to healthy aging

Experts identify a protein that may be the key to...

A new study from <a href="https://www.kcl.ac.uk/">King's College London</a> suggests that drinking <a href="http://www.earth.com/news/red-wine-lung-cancer-prevention/">red wine</a> can increase the bacterial diversity of the gut microbiome, which is a sign of improved gut health. The researchers also found that red wine consumers have lower rates of obesity and "bad" cholesterol.

The study was focused on the gut microbiome (GM) effects of beer, cider, red wine, white wine, and spirits among 916 female twins in the UK. 

"While we have long known of the unexplained benefits of red wine on heart health, this study shows that moderate red wine consumption is associated with greater diversity and a healthier gut microbiota that partly explain its long debated beneficial effects on health," explained study first author Dr. Caroline Le Roy.

The gut microbiome consists of trillions of bacteria and fungi that have a major influence on the body's metabolism, weight, immune system, appetite, and mood. A growing collection of scientific evidence has shown that a larger variety of microorganisms in the gut community helps to protect against illness and disease. 

The current study revealed that the gut microbiota of red wine consumers contained a greater number of bacterial species compared to non-consumers. Furthermore, this outcome was observed across two additional populations in the United States and the Netherlands, and was found to be consistent regardless of age, weight, regular diet, or socioeconomic status.

According to the researchers, the gut health benefits of red wine may be attributed to polyphenols, which have many beneficial properties like antioxidants. Polyphenols serve as a type of fuel for the microbes present in our system.

"This is one of the largest ever studies to explore the effects of red wine in the guts of nearly three thousand people in three different countries and provides insights that the high levels of polyphenols in the grape skin could be responsible for much of the controversial health benefits when used in moderation," said study lead author Professor Tim Spector.

The study also demonstrated a link between red wine and lower levels of obesity and "bad" cholesterol.

"Although we observed an association between red wine consumption and the gut microbiota diversity, drinking red wine rarely, such as once every two weeks, seems to be enough to observe an effect," said Dr. Le Roy. "If you must choose one alcoholic drink today, red wine is the one to pick as it seems to potentially exert a beneficial effect on you and your gut microbes, which in turn may also help weight and risk of heart disease. However, it is still advised to consume alcohol with moderation."

The study is published in the journal <a href="https://www.gastrojournal.org/">Gastroenterology</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: Shutterstock/Dima Sobko

Red wine found to improve gut health and lower the risk of obesity

A new study from King's College London suggests that drinking...

People who are aged 90 years or older, also known as nonagenarians, belong to the fastest growing age group in the world.

According to the <a href="https://www.census.gov/newsroom/press-releases/2018/cb18-41-population-projections.html">United States Census Bureau</a>, by 2030 one in every five residents will be old enough to retire, and it is not fully known how this shift in demographics will impact the United States. 

“The aging of baby boomers means that within just a couple decades, older people are projected to outnumber children for the first time in U.S. history,” Jonathan Vespa, a demographer with the U.S. Census Bureau, said in an <a href="https://www.census.gov/newsroom/press-releases/2018/cb18-41-population-projections.html">interview</a>. “By 2035, there will be 78.0 million people 65 years and older compared to 76.7 million (previously 76.4 million) under the age of 18.”

Research centered around nonagenarians specifically is crucial because this is the age group that is most at risk of dementia and neurological disorders. And now, more people are reaching the 90-year milestone than ever before. 

What are some of the contributing factors that allow <a href="https://www.earth.com/news/low-protein-high-carb-diets-aging/">people to live past 90</a>?

This is a question that spurred researchers from the <a href="http://www.mind.uci.edu/">University of California Irvine Institute for Memory Impairments and Neurological Disorders (UCI MIND)</a> to conduct an ongoing study on nonagenarians to better understand the factors behind healthy aging. 

The 90+ Study is one of the largest of the oldest-old in the world, according to <a href="https://www.forbes.com/">Forbes</a> which reported on the research.

Starting in 2003, over 1,600 participants aged 90 or older have been part of the study which started with members of The Leisure World Cohort Study (LWCS).

Researchers visit the participants every six months, recording dietary information, medical history, and what physical or leisure activities the participants take part in.  

The team also conducts neurological, neuropsychological, and cognitive tests to determine cognitive functioning and if there is any dementia or cognitive impairment. 

“Because little is known about people who achieve this milestone, the remarkable increase in the number of oldest-old presents a public health priority to promote the quality as well as the quantity of life,” wrote the UCI Mind researchers on the <a href="http://www.mind.uci.edu/research-studies/90plus-study/">90+ Study website</a>. 

The goals of the study outlined by the researchers are to find out what key factors contribute to longevity, what foods and lifestyles allow people to live longer these days, and to study cognitive decline among people in the oldest-old age group. 

The researchers want to understand how memory loss impacts people aged 90 or older and if there is any evidence of neurological disorders in the brain that has yet to be discovered. 

So far, the researchers have found that people who drink coffee and alcohol in moderation have a longer lifespan than people who don’t drink caffeine or alcohol. 

The team also found that people who were overweight in their later years lived longer than participants who had a normal BMI or who were underweight. 

When it comes to indicators of dementia or Alzheimer's in the brain, the researchers found that around half of the participants with dementia over the age of 90 have little neuropathological evidence to explain the cognitive declines.
--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Drinking coffee, alcohol could help you live past 90, research shows

People who are aged 90 years or older, also known...

A lack of sleep influences our genetic behavior, survey reveals. Too much and too little sleep has been linked to impaired decision making, <a href="https://www.earth.com/news/sleep-apnea-recalling-memories/">poor memory</a>, and an increased risk of heart disease and metabolic disorders. 

Despite the immense health risks associated with chronic sleep deprivation, more and more people sleep less than what is recommended each night. 

A new survey conducted by researchers from <a href="https://www.evelinalondon.nhs.uk/Home.aspx">Evalina London</a> found that of 2,000 British adults, 17 percent slept for eight hours, and while too little sleep can increase the risk or heart disease and weight gain, it also influences our DNA. 

Sleep deprivation doesn’t change or mutate our genes, but it can impact how our genes operate, according to the research which was funded by <a href="https://simbasleep.com/">Simba</a>, a sleep tech company, to help promote the new <a href="https://simbasleep.com/blogs/night-life/why-it-s-time-for-the-uk-to-tryfor8-hours-in-bed">#TryFor8 campaign</a>. 

The survey results also showed that 44 percent of the participants slept for 6 hours each night while health officials generally recommend that people get between seven and nine hours of sleep each night. 

“Those people who sleep under six hours have a higher risk of coronary heart disease, their blood pressure is higher, and their cholesterol is worse,” Paul Gringras, a professor at Evalina London said in a statement. “Our lack of sleep as a nation has been compared to ‘the canary in the coalmine,’ in that poor sleep is linked to so many other serious health issues.” A lack of sleep influences our genetic behavior, survey reveals

Past studies have found that too little sleep can increase the <a href="https://www.earth.com/news/sleeping-heart-disease-risk/">risk of heart attack and stroke</a>, and according to Gringras sleep deprivation can lead to a 60 percent increased risk of high blood pressure. 

As far as how sleep influences DNA, Gringras is careful to point out that it doesn’t change DNA but can impact the signals that control the daily operations of our genes.  

“Just one night’s bad sleep changes epigenetic signals to our DNA that cause weight gain and loss of muscle mass, and can affect the way that memories are laid down in the hippocampus – part of our brains,” Gringas clarifies. 

As part of the #TryFor8 campaign, Simba has launched the Simba Sleep App. 

By partnering with top rugby athletes like Maro Itoje and Jamie Roberts, the Simba Sleep App is meant to help coach people to get better sleep and monitor your sleep cycles. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer 

Image Credit: Shutterstock/ruigsantos

A lack of sleep influences our genetic behavior, survey reveals

A lack of sleep influences our genetic behavior, survey reveals....

While experts have believed that the <a href="http://www.earth.com/news/gut-health-depression/">gut microbiome</a> may be critical in regulating how the immune system fights tumors in cancer patients, the mechanisms underlying this relationship have remained unclear. For the first time, an international team of 40 scientists led by <a href="https://www.sbpdiscovery.org/">Sanford Burnham Prebys</a> (SBP) has demonstrated a causal link between the gut microbiome and the immune system's ability to fight cancer.

The researchers identified a combination of 11 bacterial strains that activated the immune system and slowed the growth of melanoma in mice. The experts also determined that the unfolded protein response (UPR), a cellular signaling pathway called which maintains protein health, plays an important role in the body's response to cancer treatment known as immune checkpoint therapy. 

“Immunotherapies have extended the lives of many cancer patients. However, the incredible effects we are seeing today are only the tip of the iceberg. By studying mechanisms of treatment response versus resistance, we can eventually expand the number of people who benefit from immunotherapy,” said study co-author Dr. Thomas Gajewski.

“This study provides an important step toward this goal. The investigators have pinpointed the UPR as an important link between the gut microbiota and anti-tumor immunity. Given previous work indicating a causal role for the host microbiota in the efficacy of checkpoint blockade immunotherapy, this additional mechanistic insight should help select patients who will respond to treatment and also help to guide new therapeutic development.”

According to the American Cancer Society, metastatic melanoma remains the deadliest form of skin cancer. Immune checkpoint inhibitors, which “release the brakes” of the body's immune system to launch an efficient tumor attack, do not work for everyone. Even when used as part of combination therapy, immune checkpoint inhibitors only benefit about half of patients. 

A growing collection of research supports the role of the gut microbiome in effective immunotherapy. Studies have shown that antibiotics and select probiotics reduce the effectiveness of treatment, while certain bacterial strains can improve the effectiveness of the treatment. The current study is providing new insight into these observations.

“Our study establishes a formal link between the microbiome and anti-tumor immunity and points to the role of the UPR in this process, answering a long-sought question for the field,” said senior author Dr. Ze'ev Ronai. “These results also identify a collection of bacterial strains that could turn on anti-tumor immunity and biomarkers that could be used to stratify people with melanoma for treatment with select checkpoint inhibitors.”

The research is published in the journal <a href="https://www.nature.com/ncomms/">Nature Communications</a>.
--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Direct link found between gut microbiome and ability to fight cancer

While experts have believed that the gut microbiome may be...

Historic volcanic eruption helped convert Iceland to Christianity. Researchers used medieval texts and an epic Icelandic poem to help confirm the chronology and impact of one of the largest lava flood eruptions in history. 

The poem, which describes apocalyptic imagery and the end of pagan gods in <a href="https://www.earth.com/news/volcanic-iceland-sells-risky-seismic-activity-tourist-attraction/">Iceland</a>, may have been used as a way to help drive the conversion to Christianity in that region. 

A team of scientists and medieval historians led by the <a href="https://www.cam.ac.uk/">University of Cambridge</a> studied ice cores and tree ring data to gauge when a major medieval eruption of Eldgjá in Iceland occurred in the 10th century. 

Although texts from all over the world describe events caused by a huge eruption, it had been unclear exactly when it occurred.

The study, published in the journal Climate Change, accurately dates the eruption and shows how the famous medieval poem used imagery of the eruption and help convert people to Christianity.

The eruption of the Eldgjá caused a lava flood totaling around two cubic kilometers.

The researchers were able to determine from ice core records in Greenland that the eruption of the Eldgjá began in the spring of 939 and continued through the autumn of 940. 

“This places the eruption squarely within the experience of the first two or three generations of Iceland's settlers,” said Clive Oppenheimer, the study’s first author. “Some of the first wave of migrants to Iceland, brought over as children, may well have witnessed the eruption.”

The impact of the eruption was felt all over Europe, in parts of Asia, and the Middle East. A haze of sulfurous dust spread across Europe, and the researchers confirmed this with Irish, German, and Italian texts citing a blood-red, weakened sun. 

The eruption and dust layer also caused cooling, droughts, famine, and a high number of fatalities all over the world. 

“Human suffering in the wake of Eldgjá was widespread. From northern Europe to northern China, people experienced long, hard winters and severe spring-summer drought,” said Tim Newfield, a co-author of the research. “Locust infestations and livestock mortalities occurred. Famine did not set in everywhere, but in the early 940s we read of starvation and vast mortality in parts of Germany, Iraq, and China.”

Although there are no surviving texts from Iceland itself that document of the eruption, the researchers used lines from the famous poem Voluspá ('The prophecy of the seeress') to show what the eruption was like for early Icelandic settlers. 

The poem dates back to 961 and describes an apocalyptic event that signaled the end of the of pagan gods in exchange for one god. 

The researchers theorize that the poem purposely invoked memories of the Eldgjá eruption to help drive a mass conversion to Christianity. 

“The poem's interpretation as a prophecy of the end of the pagan gods and their replacement by the one, singular god, suggests that memories of this terrible volcanic eruption were purposefully provoked to stimulate the Christianisation of Iceland,” said Oppenheimer. 

---

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Image Credit: Clive Oppenheimer

Historic volcanic eruption helped convert Iceland to Christianity

Historic volcanic eruption helped convert Iceland to Christianity. Researchers used...

Too much or too little sleep is harmful to heart health. A new study presented at the annual meeting of the <a href="https://www.escardio.org/">European Society of Cardiology</a> has found that six to eight hours of sleep is the ideal amount of rest for optimal heart health. According to the experts, any more or less sleep can increase the risk of deadly heart disease and stroke.

Emily McGrath is the senior cardiac nurse at the <a href="https://www.bhf.org.uk/">British Heart Foundation</a>. 

“Getting a good night's sleep is important for good health. When it comes to our heart and circulatory health, this large study suggests that there may be a sweet spot between getting too much, and getting too little sleep.”

“This research needn't trigger alarm bells for those of us partial to a sleepless night or a weekend lie-in. However, if you regularly struggle with your sleep, it's an important reminder to speak to your GP.”

“As well as having a negative impact on your quality of life, a lack of sleep could also be contributing to heart health problems further down the line.”

The findings of the study suggest that excessive sleep further elevates the detrimental effects that are associated with sleep deprivation.


Dr. Epameinondas Fountas of the <a href="http://www.onassis.org/en/public-benefit-onassis-cardiac-surgery.php">Onassis Cardiac Surgery Centre</a> in Athens, Greece, is one of the study's co-authors.

“Our findings suggest that too much or too little sleep may be bad for the heart,” said Dr. Fountas. “More research is needed to clarify exactly why, but we do know that sleep influences biological processes like glucose metabolism, blood pressure, and inflammations - all of which have an impact on cardiovascular disease.”


The massive investigation was focused on data from over a million participants that were involved in 11 studies.

According to the analysis, a sleep schedule consisting of less than six hours or more than eight hours increased the risk of fatal stroke and coronary artery disease, which is the most common form of <a href="http://www.earth.com/news/wood-coal-cooking-cardiovascular/">heart disease</a>.

Over nine years, individuals who regularly got less sleep had an increased risk of 11 percent, while those who overslept increased the risk of heart disease by 33 percent.


“Having the odd short night or lie-in is unlikely to be detrimental to health, but evidence is accumulating that prolonged nightly sleep deprivation or excessive sleeping should be avoided, said Dr. Fountas.

The research was presented at ESC Congress 2018.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Too much or too little sleep is harmful to heart health

Too much or too little sleep is harmful to heart...

Depression, anxiety linked to heightened risk of heart attack. A new study from the <a href="https://www.heart.org/">American Heart Association</a> has found that adults over the age of 45 who suffer from psychological distress such as <a href="http://www.earth.com/news/magic-mushroom-fda-depression/">depression</a> and anxiety are more likely to develop cardiovascular disease.

The study was focused on over 220,000 participants in Australia who had not experienced a heart attack or stroke at the beginning of the trial. In addition, the individuals were part of the New South Wales 45 and Up Study that was conducted between 2006 and 2009.

The survey asked the participants questions such as how often they felt tired out for no good reason, how often they felt so sad that nothing could cheer then up, and how often they felt restless or fidgety.

Among women, high psychological distress was found to be associated with a 44-percent increased risk of stroke, while high distress in men was associated with a 30-percent increased risk of heart attack.

The link between psychological distress and increased cardiovascular disease was found to exist regardless of lifestyle behaviors such as smoking, dietary habits, and disease history.

Study senior author Dr. Caroline Jackson is a Chancellor's Fellow at the <a href="https://www.ed.ac.uk/">University of Edinburgh</a>.

“While these factors might explain some of the observed increased risk, they do not appear to account for all of it, indicating that other mechanisms are likely to be important,” said Dr. Jackson.

The overall risk of developing heart attack or stroke rose with each level of psychological distress. After over four years, 4,573 heart attacks and 2,421 strokes occurred across the study participants.

“We encourage more proactive screening for symptoms of psychological distress,” concluded Dr. Jackson. “Clinicians should actively screen for cardiovascular risk factors in people with these mental health symptoms.”

The study is published in the journal <a href="http://www.ovid.com/site/catalog/journals/4567.jsp">Circulation: Cardiovascular Quality and Outcomes</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Depression, anxiety linked to heightened risk of heart attack

Depression, anxiety linked to heightened risk of heart attack. A...

We often don’t think about the history of cooking beyond how putting meat to flame opened up a new world of flavors and possibilities for preserving and preparing food through the ages.

However, when our early human ancestors started cooking food it may have permanently altered the course of evolution for the human microbiome. 

Humans are covered in bacteria. Colonies of microorganisms have set up camp in our gastrointestinal tract, billions of bacteria live on our skin, and all these microbes make up the collective microbiome. 

Studies have shown that gut bacteria can affect <a href="https://www.earth.com/news/gut-health-depression/">depression risk</a> or help with weight gain, and researchers are working to understand the important role that the microbiome plays in human health and wellbeing. 

In a new study, researchers from the <a href="https://www.ucsf.edu/">University of California, San Francisco</a>, and <a href="https://www.harvard.edu/">Harvard University</a> found that cooked food alters the microbiome of humans and mice. 

“Our lab and others have studied how different kinds of diet -- such as vegetarian versus meat-based diets -- impact the microbiome,” said Peter Turnbaugh, the senior author of the study. “We were surprised to discover that no one had studied the fundamental question of how cooking itself alters the composition of the microbial ecosystems in our guts.”

For the study, the researchers fed different animals a diet of raw meat, cooked meat, raw sweet potatoes, and cooked sweet potatoes. There was little difference between the microbiomes of the animals given raw or cooked meat, but with the sweet potatoes, it was a different story. 

There were changes in the composition and gene activity of the microbiomes of those fed cooked sweet potatoes. 

To confirm these findings, the researchers fed mice raw and cooked sweet potatoes, white potatoes, corn, peas, carrots, and beets, 

Again, the differences in the microbiome linked to a raw diet versus cooked food were considerable. 

A cooked tuber allows whoever eats it to absorb more calories in the small intestine the researchers said. Raw foods, on the other hand, have antimicrobial compounds that can damage bacteria. 

The researchers analyzed the chemical changes that occurred in cooked plants to see if these were responsible for the changes in the microbiomes. 

A small group of human participants was also fed either a diet of raw or cooked food for three days. The researchers analyzed the participants’ stool samples to see if the diets affected the microbiomes of humans in the same way as the mice. 

“It was exciting to see that the impact of cooking we see in rodents is also relevant to humans, although interestingly, the specifics of how the microbiome was affected differed between the two species,” said Turnbaugh. “We’re very interested in doing larger and longer intervention and observational studies in humans to understand the impact of longer-term dietary changes.”

The study was published in the journal Nature Microbiology. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer 

Image Credit: Shutterstock/Alexander Raths

Eating cooked versus raw food affects our gut bacteria

We often don’t think about the history of cooking beyond...

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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



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.

Flu viruses are more flexible than expected

[sendtonews key="G9bUoxcjr4-2511624-12187" type="single"] Today's Video of the Day from the...

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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

[sendtonews key="LvS8v8bp9z-2564889-12187" type="single"] Today's Video of the Day from the...

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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?

[sendtonews key="X0f6OHYoI4-2310561-12187" type="single"] Today’s Video of the Day from the...

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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

[sendtonews key="e4ZG0Jawp3-2374785-12187" type="single"] Astronomers at Johns Hopkins University have created...

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Lesotho: Africa's "Kingdom in the Sky" Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features northwest Lesotho in South Africa.



According to ESA, Lesotho is the only nation in the world that lies completely above 1,000 m in elevation. The country is famous for its tall mountains and narrow valleys, and is known as Africa's "Kingdom in the Sky."



Out of a population of around two million people, about 80 percent live in rural areas. More than 75 percent of these people are engaged in <a href="https://www.earth.com/news/climate-change-will-have-a-global-impact-on-agriculture/">agriculture</a>, including rainfed cereal production and animal grazing.&nbsp;



ESA reports that the country’s agricultural system faces a growing number of issues, with climate-related vulnerabilities such as drought, floods and extreme temperatures occurring more frequently. 



Diamonds are amongst the minerals found in the mountains. Indeed, Lesotho can truly be called the Kingdom in the Sky. Beautiful, culturally rich, safe, affordable, and easily accessible from Durban and Johannesburg, mountainous Lesotho is a vastly underrated travel destination. the Kingdom of Lesotho (Sotho: 'Muso oa Lesotho) is an enclaved country in southern Africa. It is just over 30,000 km2 (11,583 sq mi) in size and has a population of around 2 million.



Video Credit: ESA&nbsp;&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> Staff Writer 



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.

Lesotho: Africa's "Kingdom in the Sky"

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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



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 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://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



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 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



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 Pyrenees Mountains in southwest Europe

[sendtonews key="6HyfrAJTBI-1831843-12187" type="single"] Today’s Video of the Day from the...

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"

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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...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> is focused on the melt ponds that emerge during the spring and summer on the Greenland Ice Sheet, which is the largest ice mass in the northern hemisphere.



"Melt ponds are vast pools of open water that form on both sea ice and ice sheets and are visible as turquoise-blue pools of water in this Copernicus Sentinel-2 image," says ESA.



"When snow and ice melts atop glaciers, water flows in channels and streams and collects in depressions on the surface. These melt ponds can speed up the melting of the surrounding ice since they greatly reduce the ice’s ability to reflect sunlight."



"This can create a positive feedback where an increasing number of melt ponds absorb more heat which causes ice cover to melt even faster."



According to ESA, Greenland has been hit with a late-season heatwave that began in early September. This caused the type of melt event that usually occurs in the middle of summer.



"In a recent paper published in Nature Climate Change, scientists found that major sea-level rise from the melting of the Greenland ice cap is now ‘inevitable’ even if the burning of fossil fuels were to halt overnight," says ESA. "Using satellite observations of Greenland ice loss and ice cap from 2000 to 2019, the team found the losses will lead to a minimum rise of 27 cm regardless of climate change."



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



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.

Melt ponds on the Greenland Ice Sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes a new map of Mars that is providing insight into the planet’s watery past. The map also reveals where future missions could safely land on Mars.&nbsp;



The map has been created over the last decade using observations of water-rich rocks and mineral deposits. The images were captured by ESA’s Mars Express and NASA’s Mars Reconnaissance Orbiter.



"A big surprise is the prevalence of these minerals, with the map revealing hundreds of thousands of water-affected locations in the oldest parts of the planet," says ESA. "The new data will help answer exciting questions about Mars’ climate history, whether water was globally persistent or confined to short, intense episodes, and whether the conditions were ever suitable for life."



"Specifically, the map shows the locations and abundances of aqueous minerals. These are from rocks that have been chemically altered by the action of water in the past, and have typically been transformed into clays and salts."



According to John Carter of the Institut d’Astrophysique Spatiale (IAS), our collective understanding of Mars has been oversimplified. He explained that planetary scientists have tended to think that only a few types of clay minerals on Mars were created during its wet period, then as the water gradually dried up, salts were produced across the planet.



The new map shows that the composition of Mars is much more complicated than what we thought. For example, while many salts formed after Martian clays, there are some salts that are presumed to be older than some of the clays.&nbsp;



“The evolution from lots of water to no water is not as clear cut as we thought, the water didn’t just stop overnight. We see a huge diversity of geological contexts, so that no one process or simple timeline can explain the evolution of the mineralogy of Mars. That’s the first result of our study. The second is that if you exclude life processes on Earth, Mars exhibits a diversity of mineralogy in geological settings just as Earth does,” said Carter.



Video 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 history of Mars is much more complex than we thought

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Today's Video of the Day from the <a href="https://www.stowers.org/">Stowers Institute for Medical Research</a> describes how cavefish adapted to a sedentary lifestyle over tens of thousands of years. 



The experts found that the muscle metabolism of cavefish has been genetically reprogrammed over time. As a result, the animals have experienced major changes in their morphology and behavior. Despite these changes, however, the cavefish remain healthy and fit.



The research may provide new clues about the evolutionary consequences of prolonged physical inactivity in humans.&nbsp;



“It’s no surprise that people are moving less and less as technology has advanced,” said Rohner. “With cavefish, we have a unique system where we can study what might happen if people remained couch potatoes over very, very long periods of time.”



Video Credit: Stowers Institute for Medical Research



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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.

Cavefish are healthy despite their sedentary lifestyle

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> some of the most incredible waves in the world, as seen by Landsat satellites.



"With more than 370,000 miles of coastline on Earth, there are plenty of places where epic waves build up, curl over, and hurtle toward the shore.- much to the thrill of surfers," says NASA. "There are some places where these waves are so magnificent that they can be seen from space."



"With the broad perspective of satellites, we can see how these iconic waves develop into the world’s tallest, longest, fastest, and heaviest."



Video Credit: NASA Earth Observatory&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 capture the world's biggest and fastest waves

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes why satellite images and measurements of our planet have become "essential to our survival, offering a new outlook of our world."&nbsp;



Rising sea levels pose one of the biggest societal threats associated with climate change. According to ESA, satellite altimeter missions such as Copernicus Sentinel-6 are essential in monitoring global and regional changes in sea level.



"Unbeknown to many, the island of Crete, Greece, plays an important role in the Copernicus satellite altimetry constellation and on an international stage," reports ESA.



"Satellite altimetry data have to be continuously monitored at the ESA’s Permanent Facility for Altimetry Calibration where different techniques have pioneered the use of transponders to provide the best measurements to validate satellite altimeters in space soon after launch."



Dr. Craig Donlon explains that, by understanding planet Earth through satellite measurements, we are able to find evidence of change.&nbsp;



Video Credit: European Space Agency&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

Satellites have become essential to our survival

[sendtonews key="761m2QQvR1-2035772-12187" type="single"] Today’s Video of the Day from the...