A recent study is the first to suggest that the use of high-potency cannabis leaves a distinct mark on DNA, providing valuable insights into the biological impact of cannabis use.&nbsp;



High-potency cannabis is defined as having Delta-9-tetrahydrocannabinol (THC) - the principal psychoactive constituent in cannabis - content of 10% or more.&nbsp;



<h2 class="wp-block-heading" id="h-biological-impact-of-high-potency-cannabis-nbsp">Biological impact of high-potency cannabis&nbsp;</h2>



The research also showed the effect of <a href="https://www.earth.com/news/why-cannabis-use-disorder-risk-varies-among-young-adults/" target="_blank" rel="noreferrer noopener">cannabis</a> use on DNA is different in people experiencing their first episode of <a href="https://www.earth.com/news/childhood-sleep-deprivation-linked-to-adult-psychosis/" target="_blank" rel="noreferrer noopener">psychosis</a> compared to users who have never experienced psychosis. 



This suggests there could be potential for DNA blood tests to help characterize those cannabis users at risk of developing psychosis to inform preventative approaches.



“With the increasing prevalence of cannabis use and more availability of high-potency cannabis, there is a pressing need to better understand its biological impact, particularly on mental health,” said senior author Marta Di Forti, a professor of drugs, genes and psychosis at <a href="https://www.kcl.ac.uk/" target="_blank" rel="noreferrer noopener">King's College London</a> (KCL).



“Our study is the first to show high-potency cannabis leaves a unique signature on DNA related to mechanisms around the immune system and energy production.”



According to Professor Forti, future research needs to explore if the DNA signature for current cannabis use - in particular the one of high-potency types - can help identify those users most at risk to develop psychosis, both in recreational and medicinal use settings.



<h2 class="wp-block-heading" id="h-high-potency-cannabis-and-dna-methylation-nbsp">High-potency cannabis and DNA methylation&nbsp;</h2>



The researchers explored the effects of cannabis use on DNA methylation - a chemical process detected in blood samples that alters how genes are functioning (whether they are switched “on” or “off”).&nbsp;



DNA methylation is a type of <a href="https://www.earth.com/news/social-status-linked-to-lasting-epigenetic-changes-in-hyenas/" target="_blank" rel="noreferrer noopener">epigenetic change</a>, which means it alters gene expression without affecting the DNA sequence itself and is considered a vital factor in the interplay between risk factors and mental health.



The laboratory team at the <a href="https://www.exeter.ac.uk/" target="_blank" rel="noreferrer noopener">University of Exeter</a> conducted complex analyses of DNA methylation across the whole human genome using blood samples from both people who have experienced first-episode psychosis and those who have never had a psychotic experience. 



The researchers investigated the impact of current cannabis use, including frequency and potency, on the DNA of 682 participants.



<h2 class="wp-block-heading" id="h-genes-related-to-energy-and-immune-function">Genes related to energy and immune function</h2>



The analysis showed that frequent users of high-potency cannabis had changes in genes related to mitochondrial and immune function, particularly the CAVIN1 gene, which could affect energy and immune response.&nbsp;



These changes were not explained by the well-established impact that tobacco has on DNA methylation, which is usually mixed into joints by most cannabis users.



“This is the first study to show that frequent use of high-potency cannabis leaves a distinct molecular mark on DNA, particularly affecting genes related to energy and immune function,” said study lead author Emma Dempster, a senior lecturer at the University of Exeter.



“Our findings provide important insights into how cannabis use may alter biological processes. DNA methylation, which bridges the gap between genetics and environmental factors, is a key mechanism that allows external influences, such as substance use, to impact gene activity.”&nbsp;



Dempster noted that these epigenetic changes, shaped by lifestyle and exposures, offer a valuable perspective on how cannabis use may influence mental health through biological pathways.



<h2 class="wp-block-heading" id="h-valuable-new-insights">Valuable new insights</h2>



Dempster meta-analyzed data from two cohorts: the GAP study, which consists of patients with first-episode psychosis in <a href="https://slam.nhs.uk/" target="_blank" rel="noreferrer noopener">South London and Maudsley NHS Foundation Trust</a>, and the EU-GEI study, which consists of patients with first-episode psychosis and healthy controls across England, France, the Netherlands, Italy, Spain, and Brazil.



This totaled 239 participants with first-episode psychosis and 443 healthy controls representing the general population from both study sites who had available DNA samples.&nbsp;



Most of the cannabis users in the study used high-potency cannabis more than once a week (defined as frequent use) and had first used cannabis at the age of 16 years old, on average.



This study, published in the journal <a href="https://dx.doi.org/10.1038/s41380-024-02689-0" target="_blank" rel="noreferrer noopener">Molecular Psychiatry</a> provides crucial insights into how high-potency cannabis use may impact DNA and lead to <a href="https://www.earth.com/news/cannabis-potency-linked-to-dramatic-rise-in-psychiatric-disorders/" target="_blank" rel="noreferrer noopener">psychiatric disorders</a>, highlighting the need for further research to understand the biological mechanisms at play and to develop preventative strategies for those at risk of psychosis.



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High-potency cannabis use linked to epigenetic changes

A recent study is the first to suggest that the use of high-potency cannabis leaves a distinct mark on DNA, providing valuable insights into the biological impact of cannabis use.&nbsp; High-potency cannabis is defined as having Delta-9-tetrahydrocannabinol (THC) - the principal psychoactive constituent in cannabis - content of 10% or more.&nbsp; Biological impact of high-potency cannabis&nbsp; The research also showed the effect of cannabis use on DNA is different in people experiencing their first episode of psychosis compared to users who have never experienced psychosis. This suggests...

Fall is in the air, and it is the perfect time of year to enjoy the great outdoors. According to the <a href="https://www.rvda.org/RVDA/Media/News_Releases/2017_News_Releases/March_2017/Camping.aspx">2017 North American Camping Report</a>, 75 million households in the United States are active campers. Half of those families say they plan to <a href="https://www.earth.com/video/insomnia-cure-camping/">camp</a> more this year. 

Whether you are an experienced camper or just someone that looks forward to pitching a tent every now and then, it is simple to get outside and enjoy the beauty of nature. The following is a list of the 8 most amazing places to camp in the United States.

Glacier National Park 

Located in Montana on the US/Canada border, this park features more than a million acres, including mountains that began forming 170 million years ago. Featuring 130 named lakes, over 1,000 different species of plants, and hundreds of species of animals, this is one of the prime locations in the country to experience life outside.

Acadia National Park

With its 17 million acres of forest, 6,000 lakes and ponds, and 32,000 miles of rivers and streams, Maine has an abundance of biodiversity. Located on Mount Desert Island, this park encompasses everything the state has to offer including Cadillac Mountain, an incredible hiking spot that towers over the site at 1,530 feet.

Little Tybee Island

Just a short boat ride south of Tybee Island, Georgia, this is the perfect spot to sleep under the stars. The island has a number of endangered species of birds, rich salt marshes, and natural dunes. This wildlife reserve is twice the size of Tybee, yet completely uninhabited.

Shenandoah National Park

This breathtaking site in Virginia is only a short drive from Washington D.C. that features over 500 miles of hiking trails with access to gorgeous waterfalls and stunning views. One of the most popular trails is a nine-mile hike to Old Rag Mountain, which sits high in the Blue Ridge Mountains.

Badlands National Park  

Known for an abundance of fossil mammals, this historic area of South Dakota offers a number of great camping sites. The terrain is rugged and not the easiest to navigate, but the experience is well worth the extra effort. The Badlands are said to have the largest fossil accumulation from the Eocene and Oligocene Epochs.

Yosemite National Park

This park, located in the Sierra Nevada mountains of California, is known for its ancient sequoia trees, granite cliffs, clear streams and an incredible amount of biodiversity. Yosemite features 13 campgrounds, and the site is so iconic that it was key in the concept of national parks. 

Crater Lake National Park

Located in Oregon among the Cascade Mountain Range, this is the site of incredible volcanic formations, including Crater Lake. This lake is the deepest in the United States and is also said to be the cleanest and most pure lake in the country. The park has two developed campgrounds.

Pisgah National Forest  

This enchanted forest is known as the Land of the Waterfalls. It encompasses 500,000 acres of the Appalachian Mountains just outside of Asheville, North Carolina. Mile-high peaks offer majestic views and campers can enjoy rock climbing, backpacking, and fishing.

Ludington State Park

Located in western Michigan, Ludington State Park spans 5,300 acres and just last year celebrated its 80th birthday. Known as the most popular state park in Michigan, Ludington attracts a large number of tourists due to its widely diverse attractions, which include hiking, fishing, biking, boating, swimming, and sledding.

Arches National Park

Located in eastern Utah next to the Colorado River, Arches National Park contains over 2,000 natural sandstone arches across 76,000 acres. The majestic beauty and vibrant orange and red colors make the park a favorite for those most familiar with the southwestern United States. Although climbing on the named arches is strictly prohibited, climbing is allowed in other parts of the park, along with hiking and camping. Arches is also a popular destination for astronomers, thanks to its uniquely clear skies.

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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

The 10 best camping sites in the United States

Fall is in the air, and it is the perfect...

Gun control has been one of the most heated debates in the United States for decades, with the 2nd Amendment to the Constitution being weighed against the rising gun violence in many cities and the recent prevalence of mass shootings. Along with these topics, accidental shootings – particularly involving children – are also an important factor for consideration when discussing creating or changing gun laws.

New research was presented at the <a href="https://www.aap.org/en-us/Pages/Default.aspx">American Academy of Pediatrics</a> National Conference &amp; Exhibition in Chicago, which found that the regions of the U.S. with the strictest gun laws also have the lowest rates of childhood firearm injuries.

The researchers ranked each region of the U.S. using the Brady Gun Law Score, which scores states based on policy approaches to regulating both guns and ammunition. This score takes into account background checks on gun sales, reporting stolen or lost firearms, and restricting the purchase of <a href="https://www.earth.com/news/higher-suicide-rates-rural-areas/">weapons</a> among high-risk populations. The study compared these regional scores with national data from the Nationwide Emergency Department Sample from 2009-2013, which included analysis of over 100,000 emergency department visits for pediatric firearm-related injuries.

In comparing the regions’ Brady Gun Law Scores with the number of these injuries per region, the researchers found that regions with higher Brady scores (indicating stricter gun laws) also had lower rates of emergency department visits for firearm injuries among children and teens. This suggests that stricter gun laws may be related to fewer firearm injuries among youth.

Regionally, the lowest rate of firearm injuries occurred in the Northeast, which had the highest Brady score as well. The Midwest had the second lowest injury rate, the West had the third lowest, and the South was last with the highest rates of visits for pediatric firearm injuries – and also the lowest Brady score.

“Our study highlights the regional variations in gun laws,” says Dr. Monika Goyal, an assistant professor of pediatrics and emergency medicine at Children’s National Health System and <a href="https://www.gwu.edu/">The George Washington University</a>. “It also suggests how gun laws may help to reduce the number of pediatric firearm victims being treated in the emergency department each year.”

While more research on other competing factors will need to be done, this study is a step in the right direction in terms of determining what may be putting children at risk of firearm injuries. It’s safe to say we can all get on board with decreasing the number of children ending up in hospitals with gun wounds.

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By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Stricter gun laws linked to fewer child firearm injuries

Gun control has been one of the most heated debates...

More and more studies are showing that access to safe, natural environments improves the overall health of children including heart health, mental health, weight management, and stress management. A new concept has emerged from this research that is known as a green schoolyard.

Stephen Pont is the medical director at <a href="https://www.dellchildrens.net/">Dell Children's Texas Center</a> and an assistant professor of Pediatrics at <a href="https://dellmed.utexas.edu/">UT-Austin Dell Medical School</a>.

"Green schoolyards can include outdoor classrooms, native gardens, storm water capture, traditional play equipment, vegetable gardens, trails, trees and more," said Dr. Pont. "And outside of school time, these schoolyards can be open for the surrounding community to use, benefitting everyone."

Green schoolyards offer <a href="https://www.earth.com/news/deportation-fears-american-children/">children</a> a healthy outdoor environment as part of their daily lives. Green schoolyards also provide value to the entire community by promoting improved health and higher rates of community and family engagement. 

Richard Louv is a co-founder of the <a href="http://www.childrenandnature.org/">Children &amp; Nature Network</a>.

"Too many children have no access to quality school grounds. In many neighborhoods, the standard play space is a barren asphalt playground or a concrete slab surrounded by chain link fence--a completely unsuitable environment for children's play,” said Louv.

In collaboration with the Children &amp; Nature Network and the <a href="http://www.nlc.org/">National League of Cities</a>, five cities have implemented green schoolyards as a result of the research. The study authors have documented green schoolyard advantages such as improved academic outcomes, physical activity, and mental health.

"So many physicians and health professionals choose to spend their free time in nature, but we often forget that nature can be a powerful health intervention for our patients, both for the prevention and improvement of many medical conditions," said Dr. Pont. "We should all be champions for kids and families getting more Vitamin N."

The research will be presented September 16th at the <a href="https://www.aap.org/">American Academy of Pediatrics</a> National Conference &amp; Exhibition in Chicago. The concept will be presented as, "Green Schoolyards Support Healthy Bodies, Minds and Communities.”

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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

Green schoolyards improve mental and physical health of kids

More and more studies are showing that access to safe,...

It has been estimated that up to one-third of young North Americans and Europeans partake in binge drinking, particularly during their college years.

Binge drinking, as described by <a href="https://www.niaaa.nih.gov/">The National Institute of Alcohol Abuse and Alcoholism</a>, occurs when 4 to 5 drinks are consumed in a two-hour period. 

Both binge drinking and alcoholism have been scientifically proven to affect brain activity. But for college students specifically, binge drinking has been linked to poor performance in school, neurocognitive deficits, and risky sexual behavior, not to mention the risks involved with alcohol poisoning and drunk driving  

Researchers in Spain and Portugal set out determine if binge drinking had any impact on the brain activity of college students while at rest. 

“A number of studies have assessed the effects of binge drinking in young adults during different tasks involving cognitive processes such as attention or working memory. However, there are hardly any studies assessing if the brains of binge drinkers show differences when they are at rest, and not focused on a task, “ said Eduardo López-Caneda from the<a href="https://www.uminho.pt/EN"> University of Minho</a> in Portugal and one of the researchers. 

Researchers asked first-year college students to take a survey about their drinking habits. If the student had partaken in binge drinking in the last month. The researchers then attached electrodes to the students and observed electrical activity in the different parts of the brain while at rest. 

The results showed different brain activity in the students labeled as binge drinkers. These students had higher measurements of beta and theta oscillations in the right temporal lobe and bilateral occipital cortex. These results are similar to the brain activity of chronic alcoholics. 

Because adolescent brains are still developing, it is especially dangerous that young binge drinkers display brain activity similar to the damage done to older adult alcoholic brains.

Lopez-Caneda stresses the importance of future studies factoring in this research to see just how much brain activity can be affected by binge <a href="https://www.earth.com/news/men-harder-quitting-drinking/">drinking</a> at a young age. 

The study was published in the journal, Frontiers in Behavioral Neuroscience. 

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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

College binge drinking found to alter brain activity

It has been estimated that up to one-third of young...

Feeling alone may have a negative effect on your overall well-being, according to a new study. Researchers found that new university students consistently think their peers have more friends and a more active social life than they have. Even when this is not the case, <a href="https://www.earth.com/news/college-sporting-venues-zero-waste/">students</a> who believe it to be true feel less accepted.

Ashley Whillans is an assistant professor at <a href="http://www.hbs.edu/">Harvard Business School</a> who led the study while she was a PhD candidate at the <a href="https://www.ubc.ca/">University of British Columbia</a>.

"We know the size of your social networks has a significant effect on happiness and wellbeing," said Whillans. "But our research shows that even mere beliefs you have about your peers' social networks has an impact on your happiness."

The research team collected data from a survey of over 1,000 first-year students at the University of British Columbia. Students reported how many friends they had made and estimated how many friends they believed their peers had made since the beginning of the school year. The study revealed that 48 percent of the students believed others had developed more close friendships, while 31 percent believed the opposite. 

A second survey tracked 389 students until the end of their first year. The students who believed that they had less friends than their peers at the beginning of the year reported lower levels of wellbeing.

Senior author Frances Chen said that the public nature of social activities may explain why students feel their peers are doing better socially.

"Since social activities, like eating or studying with others, tend to happen in cafes and libraries where they are easily seen, students might overestimate how much their peers are socializing because they don't see them eating and studying alone," said Chen.

According to Chen, further research is needed to determine whether the same pattern exists in other circumstances, such as with new immigrants, people moving to a new city, or people starting a new job.

"These feelings and perceptions are probably the strongest when people first enter a new social environment, but most of us probably experience them at some point in our lives," said Chen.

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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

Most young adults assume everyone else has more friends

Feeling alone may have a negative effect on your overall...

Repealing the Affordable Care Act (ACA), otherwise known as Obamacare, would likely leave many veterans uninsured, and demand for Veterans Affairs (VA) health care would surge, according to a recent report from the RAND corporation, a nonprofit research organization. 

Many veterans rely on VA health care and are more likely to be insured than non-veterans. Those most impacted by new legislation to repeal would be older, low income, and less healthy veterans. 

In 2013, it was recorded that one in ten non-elderly veterans were not insured and did not have VA coverage. VA health care will likely be faced with an influx of those seeking care if health coverage changes and would find their resources strained because of it. 

“Some veterans who lose health insurance coverage as a result of ACA repeal will become more likely to seek care from the VA health system, leading to additional strain on a health care system that already faces challenges in ensuring adequate capacity,” said Michael Dworsky, lead author of the study and RAND economist. 

Not all <a href="https://www.earth.com/news/cannabis-treatment-chronic-pain/">veterans</a> are eligible for VA care, and even those that are don't always enroll in the program. Veterans who do enroll in the VA health system may still seek treatment elsewhere for many reasons. 

Due to these variables, any changes in non-VA health insurance, like Obamacare, will majorly impact veterans and the VA. 

The researchers assessed the possible ramifications of changes to the ACA by looking at how many veterans received health care and the source of care. Once they had enough data, they projected how coverage for veterans would have been affected if the ACA had been repealed or changed in 2015. 

The ACA reduced the numbers of uninsured veterans and VA-covered veterans who lacked non-VA insurance, and according to the research,m any future changes or a repeal would impact both the VA and veterans on a broad scale. 

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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

Study: Repealing Obamacare would leave veterans uninsured

Repealing the Affordable Care Act (ACA), otherwise known as Obamacare,...

An extensive 25-year study found undeniable undercurrents of sexist media coverage and misogyny against women in sports. The study focused on sports coverage and commentators to show not just the prevalence of sexism in sports news, but also how the language and tone of sexism have changed. 

Commentators tend to cover women’s sports with bland narration, making it appear to spectators that women’s sports just aren’t as exciting as men’s sports. 

The study also found that for news coverage, highlights and news updates for women’s sports had almost 50% less airtime. 

Cheryl Cook from <a href="http://www.purdue.edu/">Purdue University</a> conducted the study along with Michela Musto and Michael A. Messner from the <a href="https://www.usc.edu/">University of Southern California</a>. The research was published in the journal, Gender &amp; Society. 

Starting in 1989, every five years, the researchers analyzed six weeks of sports news on three Los Angeles network stations and three weeks of ESPN’s SportsCenter.

One interesting aspect of conducting such a long reaching study was observing how the language and tone of sexism changed in sports news. For example, in the 1990’s coverage of women’s sports was rife with blatant misogyny, linking the female players to society's conventional gender roles of mothers and wives. 

The most recent data from 2014 shows a tonal shift in sports commentators, covering games with bland and lackluster air. The researchers call this “gender bland sexism” because it subconsciously makes the viewer think women’s sports are not as exciting. 

“Sports news shows now disguise sexism in their 'matter-of-fact' reactions to women athletes' performance, subtly sending viewers the message that women's sports lack the excitement and interest of men's sports,” the researchers wrote. 

A breakdown of the data collected in 2014 reveals that women’s <a href="https://www.earth.com/video/rubber-sports-possible/">sports</a> get nearly 50% less air time for news stories. While sports commentators take on a fast-paced, joking, and rousing tone when covering men’s sports, female athletes and coaches get fewer interviews, and there is less replay of game footage and highlights of exciting plays. 

“The stubborn persistence of the lower quantitative coverage and the poor production values serve as key to marginalizing women within the male-dominated, male-controlled institution of sport,” said the authors. 

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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

Sexist media coverage of women’s sports influences reception

An extensive 25-year study found undeniable undercurrents of sexist media...

According to the <a href="https://www.cdc.gov/nchs/products/databriefs/db241.htm">CDC</a>, from 1999 and 2014, the suicide rate jumped 24%, from 10.5 to 13.0 per 100,000 people. More specifically, the rate of suicide attempts has especially increased in younger adults with only a high school education and in those with previously diagnosed mood, anxiety, and personality disorders.

Sunday, September 10th was World Suicide Prevention Day, and September is Suicide Prevention Awareness month. It is a time to raise awareness, encourage communication, and help those affected by <a href="https://www.earth.com/news/higher-suicide-rates-rural-areas/">suicide</a>. 

A new report published in the journal JAMA Psychiatry examined the circumstances that most influenced suicide risk factors.

The authors collected data from two surveys that asked 69,341 adults in the U.S. questions about the occurrence and timing of suicide attempts.

Suicide attempts increased in adults from .62 percent in 2004 through 2005 to .79 percent in 2012 through 2013. The surveys also showed that most of the suicide attempts had been women under the age of 50.

The risk of a suicide attempt increased with adults aged 21-34, with those who lacked a formal college education, and in adults who had antisocial personality disorders, a history of violent behaviors, or a history of anxiety or depressive disorders.  

“The pattern of suicide attempts supports a clinical and public health focus on younger, socioeconomically disadvantaged adults, especially those with a history of suicide attempts and common personality, mood and anxiety disorders,” the study reported.

To learn more about Suicide Prevention Awareness month and to see what resources are available, visit the <a href="https://www.nami.org/Get-Involved/Awareness-Events/Suicide-Prevention-Awareness-Month">National Alliance on Mental Illness Website</a>. 

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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

Study reveals increase in suicide attempts among young adults

According to the CDC, from 1999 and 2014, the suicide...

Many patients who suffer from chronic pain, post traumatic stress disorder, or insomnia use cannabis-based medicines for sleep. But now, clinical research from the <a href="https://umich.edu/">University of Michigan</a> warns that regular users may struggle to sleep without the drug or may build up too high of a tolerance. 

Severe or chronic pain accounts for the majority of qualified conditions for people to use medicinal marijuana in the United States, but another common reason for people to seek out a medical marijuana card is to treat insomnia. 

Despite the legalization of marijuana in 28 states, there are still many things about the drug that are unknown. Previous research on cannabis and sleep was conducted in sleep labs, where sleep stages and sleep continuity were measured. Some of these studies showed that individuals were able to fall asleep faster and stay asleep longer under the influence of cannabis.

For patients who use cannabis regularly, however, quitting the drug causes difficulty sleeping. Previous research also indicates that chronic use of <a href="https://www.earth.com/news/countries-legalize-cannabis-law/">cannabis</a> may lesson the sleep benefits overtime. To test these theories, experts set out to determine how sleep quality varies among people who never smoke marijuana, occasionally smoke, and smoke daily.

98 young males were recruited for the study. They were asked to answer surveys, keep sleep diaries, and wear accelerometers for a week. Throughout the study, the individuals were instructed to use marijuana as they normally would. The results of the study found that 39 percent of the daily cannabis users reported significant insomnia compared to only ten percent of occasional smokers.

While frequent smokers were found to actually sleep worse, the researchers also discovered that frequent smokers with anxiety and depression slept much better. The researchers ultimately determined that the effects of cannabis on sleep are highly variable.

Psychiatry Professor Deirdre Conroy said that the results of using cannabis to sleep will vary according to factors such as each individual, the type of cannabis, the concentrations of the cannabis, and the frequency of use. 

Future exploration of this topic may look into how different subspecies and concentrations of cannabis impact sleep. For example, one strain of cannabis may help sleep while another may cause nightmares.

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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

Cannabis helps you sleep, but regular users can’t sleep without it

Many patients who suffer from chronic pain, post traumatic stress...

Researchers from Germany and France have determined that particles from tattoo ink can travel inside the body and reach the lymph nodes. The study, published in <a href="http://www.nature.com/srep/">Scientific Reports</a>, provides the first evidence that various pigments and toxic element impurities are transported through tattooed tissues.

Scientists at the <a href="http://www.esrf.eu/">European Synchrotron Radiation Facility</a> (ESRF) also discovered in-depth characterization of the pigments in the tissues. Hiram Castillo is a scientist at the ESRF and one of the authors of the study.

"When someone wants to get a tattoo, they are often very careful in choosing a parlor where they use sterile needles that haven’t been used previously,” explained Castillo. “No one checks the chemical composition of the colors, but our study shows that maybe they should.”

Little is known about the potential impurities in the color mixture applied to the skin. Most <a href="https://www.earth.com/video/tattoos-stay-body/">tattoo</a> inks contain organic pigments, but also contain contaminants like nickel, chromium, manganese, or cobalt. 

Other than carbon black, the most common ingredient used in tattoo inks is titanium dioxide (TiO2). This white pigment, also commonly used in food additives and paints, is used to create specific shades when mixed with colors. TiO2 tattoos often cause delayed healing, skin elevation, and itching.

Until now, potential health hazards from tattoos had only been investigated by chemical analysis of the inks. Two particular beamlines used in the current study allowed a team of scientists to clearly view titanium dioxide located inside of the tissue. 

Overall, the scientists found strong evidence for both migration and long-term deposition of toxic elements and tattoo pigments in the skin and the lymphatic environment. A broad range of particles - up to several micrometers in size - were located in human skin, but only nanoparticles had traveled to the lymph nodes. The scientists warn that these particles could lead to chronic enlargement of the lymph node and lifelong exposure.

Study co-author Bernhard Hesse is a visiting scientist at the ESRF. He explained, "We already knew that pigments from tattoos would travel to the lymph nodes because of visual evidence: the lymph nodes become tinted with the color of the tattoo. It is the response of the body to clean the site of entrance of the tattoo. What we didn't know is that they do it in a nano form, which implies that they may not have the same behavior as the particles at a micro level. And that is the problem: we don't know how nanoparticles react.”

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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

Particles from your tattoo can get into your lymph nodes

Researchers from Germany and France have determined that particles from...

Psychedelic mushrooms may actually be used in the future to treat depression. British scientists are planning to study the response of patients to the active ingredient in magic mushrooms known as psilocybin.

One out of three cases of depression is resistant to treatment. Researchers have been trying for years to find alternative ways to successfully treat depressed patients. For example, scientists have found that the club drug and anesthetic Ketamine can rapidly treat some of the most severe cases of depression.

Even though psychoactive drugs such as MDMA and LSD were made illegal in the 1960s, there is new interest in how these drugs may be able to help patients with serious mental conditions including post-traumatic stress disorder and obsessive compulsive disorder.

A London-based company called Compass Pathways will test the effectiveness of psilocybin in depressed patients next year. The study will take place in eight European countries over the course of three months.

The upcoming trial, which is the largest of its kind, will focus on 400 patients suffering from depression who are resistant to existing treatments. The scientists will use digital technology to observe how the patients respond to the psilocybin.

George Goldsmith is one of the founders of Compass Pathways. He explained to the <a href="https://www.ft.com/">Financial Times</a>, “This is not about going back to the 1960s, but about taking forward 21st century science with digital innovation and medicines now that we understand how they work.”

From what is known from widespread recreational use of illegal <a href="https://www.earth.com/news/mushrooms-safest-recreational-drug/">mushrooms</a>, experts feel confident that psilocybin is safe. However, the design of the study is still subject to regulatory approval.

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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

Psychedelic mushrooms could help treat depression

Psychedelic mushrooms may actually be used in the future to...

This may not come as a surprise, but areas that are under the control of the Islamic State tend to not do so well in the economic department. A new report from the <a href="https://www.rand.org/">RAND Corporation</a> used advanced satellite-driven data to analyze the GDP and overall economic status of cities living under the rule of the Islamic State (IS), estimating that the IS contributed to a 23 percent reduction in the GDP of cities under its control.

The report followed the economy of the Islamic State over the course of its peak territorial control and decline through mid-2016. It found that the IS economy showed signs of significant decay across multiple sectors, including local markets, electricity, and agriculture.

This report focused on the effects of IS control on local economies because the group relies on local taxation for a large amount of its revenue. In Raqqa and Mosul, the capitals of the IS, the group devoted a vast amount of resources to their governance – allowing those cities to fare better than most early on in the conflict. These cities were supposed to be the heart of the caliphate (rule or reign of a Muslim leader) that the IS was looking to build. However, the areas were unable or unwilling to support economies in the less secure and contested parts of their territories. 

Along with the assessment of economy and GDP, the report also analyzed the ability of the Islamic State to govern its territories and the populations under its control in Iraq and Syria. 

“The Islamic State's inability to sustain a large-scale prosperous proto-state represents an institutional failure by the group to capitalize on a vast territory, historically weak governments, potentially sympathetic local populations, and a massive financial war chest," says Eric Robinson, lead author and a research programmer and analyst at RAND, a nonpartisan research organization.

Researchers found that the most significant factor for this economic decline was the inability of the IS to defend its territory against military opposition, although the lack of effective governance was also an issue – to nobody’s surprise. 

“Our analysis suggests that it is too simplistic to blame stagnant economic conditions solely on the quality of the Islamic State's governance,” explains Daniel Egel, an author of the report and economist at RAND. “The U.S. and coalition military campaign against the group has been integral to their failure to build prosperous local economies and develop a sustainable caliphate."

Besides the helpful knowledge of the Islamic State’s inability to govern or promote economic stability, this report also exemplifies an innovative approach to measuring economic activity in areas of conflict. When conditions on the ground affect ability to gather data on local economies, researchers are able to use satellite imagery from space instead. The view from space can provide insight on <a href="https://www.earth.com/news/agriculture-threaten-native-wildlife/">agricultural</a> production, market activity, vehicle traffic, industrial activity, and labor supply.

The study also provides insight for what areas will be most in need of stabilization in the future – benefitting both the people most in need of help and those that are on the ground to help them.

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By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: DigitalGlobe

Islamic State territories showing economic free-fall

This may not come as a surprise, but areas that...

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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



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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



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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



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Santiago, Chile in South America

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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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Interactive map of the universe includes 200,000 galaxies

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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 



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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



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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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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

[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



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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



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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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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...