Life expectancy in the United States reveals a deeply fractured landscape. Yale School of Public Health researchers examined records of 179 million deaths between 1969 and 2020, and traced how generational health patterns diverged across regions.



The team chose an unconventional approach - analyzing life expectancy by birth cohort instead of by year - to uncover hidden <a href="https://www.earth.com/news/unhealthy-habits-can-make-your-heart-age-faster/" target="_blank" rel="noreferrer noopener">disparities</a> missed by standard mortality reports.



The findings, published in JAMA Network Open, tell a compelling story of a nation where regional policies, economic conditions, and public health initiatives shape life trajectories in dramatically different ways.



<h2 class="wp-block-heading" id="h-life-expectancy-gains-in-some-states">Life expectancy gains in some states </h2>



California and New York surged ahead in terms of extending lifespans significantly. In contrast, many Southern states struggled to keep pace. This result indicates that the U.S. is a country where the place of birth remains a <a href="https://www.earth.com/news/girls-diets-strongly-influence-when-they-begin-puberty/" target="_blank" rel="noreferrer noopener">potent predictor</a> of lifespan.



“For females born in some Southern states, life expectancy increased by less than three years from 1900 to 2000,” said Theodore R. Holford, lead author and professor emeritus at <a href="https://www.yale.edu" target="_blank" rel="noreferrer noopener">Yale</a>.



“That’s a staggering <a href="https://www.earth.com/news/medical-oddity-human-skin-heals-three-times-slower-than-our-primate-relatives/" target="_blank" rel="noreferrer noopener">contrast</a> when you consider that in states like New York and California, life expectancy rose by more than 20 years over the same period.”



Washington, D.C., a region once synonymous with low life expectancy, now exemplifies transformative progress. Between 1900 and 2000, the life expectancy of women in the capital increased by almost 30 years, while the life expectancy of men leapt by 38 years. 



<h2 class="wp-block-heading" id="h-what-fueled-such-a-stark-contrast">What fueled such a stark contrast?</h2>



Public health policies, economic revitalization, and aggressive tobacco control campaigns reshaped the region. 



California, banned workplace smoking in 1995, slashed smoking rates among workers and teens, and lowered smoking-related deaths. Kentucky, by contrast, chose a different path by resisting tobacco control efforts and continuing to grapple with high <a href="https://www.earth.com/news/rats-are-spreading-a-deadly-disease-across-cities/" target="_blank" rel="noreferrer noopener">mortality</a> rates from smoking.



“These trends in mortality and life expectancy reflect not only each state’s policy environment but also their underlying demographics as well,” said Jamie Tam, assistant professor at Yale. 



“It’s not surprising that states with fewer improvements to life expectancy also have higher rates of poverty, for example.”



<h2 class="wp-block-heading" id="h-life-expectancy-trends-by-generation">Life expectancy trends by generation</h2>



The study’s approach of using an age-period-cohort model allowed the researchers to isolate the impact of generational experiences. 



Instead of year-by-year comparisons, the team followed birth cohorts from 1900 to 2000, revealing how early-life conditions like disease exposure, sanitation, and vaccine access shaped lifespans.



“Looking at mortality trends by cohort gives us a more accurate reflection of the lived experiences of populations,” noted Holford.



“It shows the long-term impact of policies and social conditions affecting the life course of populations, that might otherwise be invisible in year-by-year comparisons of mortality rates from different generations.”



A child born in Mississippi in 1900 faced vastly different health risks than one born in California in 1950. The study’s cohort analysis illuminated how those risks compounded over time, creating distinct health outcomes across states.



<h2 class="wp-block-heading" id="h-aging-rapidly-or-aging-well">Aging rapidly or aging well</h2>



States varied not only in life expectancy gains but also in how quickly health declined after age 35. Oklahoma and Iowa showed rapid rises in mortality risk, with mortality doubling in less than eight years. 



New York and Florida, in contrast, experienced slower rates of increase, suggesting healthier <a href="https://www.earth.com/news/20-year-study-of-1000-adults-reveals-how-marijuana-alters-dna/" target="_blank" rel="noreferrer noopener">aging</a> populations.



Among women, the slowest mortality increase occurred in New York, where it took 9.39 years for mortality risk to double. 



For men, Florida recorded the longest doubling time at 11.47 years. Oklahoma’s women faced the fastest decline, with mortality risk doubling in just 7.96 years - a rate that suggests rapid health deterioration.



“The disparities we see today are the result of decades of cumulative effects on smoking rates, health care access, environmental exposures, and public health investments,” Holford emphasized. “Without conscious policy changes, these gaps will likely persist or even widen.”



<h2 class="wp-block-heading" id="h-reinvention-in-washington-d-c">Reinvention in Washington, D.C.</h2>



Washington, D.C., a region once plagued by poor health outcomes, now serves as a case study in urban transformation. 



At the dawn of the 20th century, women in the capital could expect to live just 63.9 years. By 2000, life expectancy had soared to 93 years - the highest gain recorded nationwide. Male life expectancy jumped from 48.7 years to 86.5 years over the same period.



What drove this metamorphosis? Improved healthcare infrastructure, urban policy changes, and robust public health initiatives fueled the gains. 



Yet, for rural Southern states, the story remained grim. In Kentucky and Alabama, policymakers resisted public health reforms, leaving residents trapped in cycles of poverty and poor health outcomes.



<h2 class="wp-block-heading" id="h-poverty-s-impact-on-life-expectancy">Poverty's impact on life expectancy</h2>



While Washington, D.C., and California leveraged economic growth to implement effective health policies, states like Mississippi and Kentucky remained mired in economic hardship. 



Poverty compounded existing health risks, leaving residents more vulnerable to chronic diseases and less likely to access preventive care.



California’s tobacco control measures slashed smoking rates, particularly among younger cohorts. In Kentucky, however, the absence of similar policies allowed smoking rates to persist, resulting in higher smoking-related death rates. 



The data illustrate a stark divide: states with strong economies and progressive health policies saw life expectancy gains, while poorer states stagnated.



<h2 class="wp-block-heading" id="h-interventions-to-bridge-the-gap">Interventions to bridge the gap</h2>



Targeted public health interventions offer a path forward. Researchers recommend that states with lower cohort life expectancy consider comprehensive tobacco regulations, expanded healthcare access, and environmental health initiatives.



“This research highlights the importance of viewing health through a generational lens,” Tam said. “The benefits of health interventions ripple across lifetimes.”



For Southern states, reversing the stagnation will require targeted investments in public health infrastructure, disease prevention, and health education. 



Without such efforts, the study warns, the gap between states with high and low life expectancy will only widen, locking future generations into predetermined health outcomes.



“Where you are born shouldn’t determine how long you live,” Holford concluded. “But in America, it still does.”



The study is published in the journal <a href="https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2833159" target="_blank" rel="noreferrer noopener">JAMA Network Open</a>.



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Life expectancy in America depends on where you are born  

Life expectancy in the United States reveals a deeply fractured landscape. Yale School of Public Health researchers examined records of 179 million deaths between 1969 and 2020, and traced how generational health patterns diverged across regions. The team chose an unconventional approach - analyzing life expectancy by birth cohort instead of by year - to uncover hidden disparities missed by standard mortality reports. The findings, published in JAMA Network Open, tell a compelling story of a nation where regional policies, economic conditions, and public health initiatives shape...

A new forecasting tool will let scientists know which cities are at risk of flooding as glacial land ice melts. Developed by scientists at <a href="https://www.jpl.nasa.gov/">NASA's Jet Propulsion Laboratory</a> in California, the model also gives experts insight into which ice sheets are of the most concern.

The tool, which predicts how water will be “redistributed" as land ice melts, can inform cities of which particular <a href="https://www.earth.com/news/iceberg-a-68/">ice sheets</a>, ice caps, and glaciers will impact sea level rise in their region.

Dr. Eric Larour, who has worked in the Jet Propulsion Laboratory since 2005, is the project’s lead developer. 

Dr. Larour told <a href="http://www.bbc.com/news">BBC News</a>, "We can compute the exact sensitivity - for a specific town - of a sea level to every ice mass in the world. This gives you an idea, for your own city, of which glaciers, ice sheets and ice caps are of specific importance."

Dr. Larour explained that the tool diagnoses the sea level rise by examining its three major contributors, the first of which is gravity. 

Dr. Larour said that ice sheets “are huge masses that exert an attraction on the ocean. When the ice shrinks, that attraction diminishes- and the sea will move away from that mass." In addition, land that has been compressed underneath the weight of the ice expands vertically.

The third major influence on the pattern of sea level change is the Earth’s rotation.

"You can think of the Earth as a spinning top," said Dr Larour. "As it spins it wobbles and as masses on its surface change, that wobble also changes. That, in turn, redistributes water around the Earth."

The researchers found that sea level rise caused by changes in the northern and eastern regions of the Greenland ice sheet will directly impact New York, while London may be significantly affected by the ice sheet’s northwestern region. Sea level pattern changes in Sidney will be heavily influenced by melting ice sheets along the northeast and northwest coastline of Antarctica, according to the study.

"As cities and countries attempt to build plans to mitigate flooding, they have to be thinking about 100 years in the future and they want to assess risk in the same way that insurance companies do,” said senior scientist Dr. Erik Ivins.

The findings of the study are published in <a href="http://advances.sciencemag.org/?utm_source=gophotonics">Science Advances</a>.

--

By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

New tool predicts which cities are at risk as sea levels rise

A new forecasting tool will let scientists know which cities...

It can be very challenging to make important decisions based on cost versus benefit, and neuroscientists at the <a href="http://web.mit.edu/">Massachusetts Institute of Technology</a> have determined that this type of conflict is drastically affected by chronic stress. When mice were faced with a cost-benefit analysis, stress caused them to make the most high-risk decisions available.

"One exciting thing is that by doing this very basic science, we found a microcircuit of neurons in the striatum that we could manipulate to reverse the effects of stress on this type of decision making,” said study senior author Ann Graybiel. “This to us is extremely promising, but we are aware that so far these experiments are in rats and mice." 

The research team had first identified the brain circuit involved in decision making that involves cost-benefit conflict in 2015. In that study, the researchers found that they could suppress the circuit and alter the rodents' preference for lower-risk, lower-payoff choices to a preference for higher risks and higher payoffs.

In the current study, the researchers exposed the mice to a short period of stress every day for two weeks. Before experiencing stress, the rodents would choose to run toward the region of the maze which had dimmer light and weaker chocolate milk about half the time. The researchers gradually increased the concentration of chocolate milk found in the dimmer side and the animals began choosing that side more frequently.

However, when chronically stressed rodents were put in the same situation, they continued to choose the side of the maze with bright light and better chocolate milk, even as the chocolate milk concentration increased on the other side. This was the same behavior the researchers witnessed in their previous study when they disrupted specific decision-making circuitry.

"Somehow this prior exposure to chronic stress controls the integration of good and bad," said Graybiel. "It's as though the animals had lost their ability to balance excitation and inhibition in order to settle on reasonable behavior."

The researchers found that after this stress-induced change takes place, it remains in effect for months. However, they were able to develop a way to restore normal decision making in the stressed mice, which demonstrates that the brain circuitry involved in cost-benefit decision making remains intact following chronic <a href="https://www.earth.com/news/watching-sports-heart-stress/">stress</a>. 

The findings of the study, which are published in <a href="http://www.cell.com/">The Cell</a>, suggest that the key brain circuitry identified by the researchers may be susceptible to guidance that could restore normal behavior in humans who have disorders which cause atypical decision making.

--

By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Stress causes the brain to make risky decisions

It can be very challenging to make important decisions based...

A new study published in the <a href="http://jech.bmj.com/">Journal of Epidemiology &amp; Community Health</a> finds that heavy drinking and smoking lead to visible signs of aging. The researchers suggest that this behavior leads to looking older than one's years. Light to moderate drinking, however, was not linked to physical aging.

The experts analyzed data from more than 11,500 adults. As part of the <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4625209/">Copenhagen City Heart Study</a>, the heart health and visible aging signs of the individuals had been tracked for an average of 11.5 years.

Before clinical tests, the participants reported on their lifestyle, general health, and how much they <a href="https://www.earth.com/news/drinking-kills-brain-stem-cells/">drank</a> and smoked. They were examined for four signs of aging that have been linked to a heightened risk of cardiovascular issues including earlobe creases, arcus corneae, xanthelasmata, and male pattern baldness.

The individuals observed for the study ranged in age from 21 to 93. Average alcohol consumption was 2.6 drinks per week for the female participants and 11.4 drinks per week for the men. 57 percent of the women and 67 percent of the men were current smokers.

The study revealed that arcus corneae was the most common sign of aging for both sexes, with a prevalence of 60 percent among men over 70 and among women over 80. The least common sign was xanthelasmata, with a prevalence of 5 percent among men and women over 50. 

The study also demonstrated that heavy drinking and smoking led both male and female participants to looking older than their true age. Heavy drinkers and smokers also had an increased risk of developing arcus corneae, earlobe creases, and xanthelasmata.

For example, 28 or more drinks a week was associated with a 33 percent heightened risk of arcus corneae among the women, and 35 or more drinks per week among the men led to a 35 percent heightened risk of corneal arcus.

The investigation showed that visible signs of aging were found to be no different among light to moderate drinkers than among non-drinkers. Furthermore, male pattern baldness was not linked to heavy drinking and smoking.

The study authors concluded, "This is the first prospective study to show that alcohol and smoking are associated with the development of visible age-related signs and thus generally looking older than one's actual age....This may reflect that heavy drinking and smoking increases general aging of the body."

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Heavy drinking and smoking will visibly age you

A new study published in the Journal of Epidemiology &amp;...

In today’s digital age, <a href="https://www.earth.com/news/texting-pain-neck-literally/">texting</a> with emojis, abbreviations, GIFs, and memes has become the new norm. 

The downside is that texting eliminates both verbal and facial cues, and so sometimes texts can be misinterpreted or misread. Something as small as a punctuation or capitalization can change the entire tone of a text message. 

Emojis may seem like a frivolous or even lazy development, but a new study has found that they can actually help convey tone and meaning in written communication.

The study, conducted by researchers at <a href="https://www.binghamton.edu/">Binghamton University</a>, found that exclamation points, emojis, and punctuation help replace the visual cues found in face-to-face communication. 

“In contrast with face-to-face conversation, texters can't rely on extra-linguistic cues such as tone of voice and pauses, or non-linguistic cues such as facial expressions and hand gestures,” said Celia Klin, one of the study’s co-authors. “It's been suggested that one way that texters add meaning to their words is by using ‘textisms’-- things like emoticons, irregular spellings (sooooo) and irregular use of punctuation (!!!).”

In a previous study, Klin had discovered that the use of a period at the end of a text message made the text seem less sincere.

For this study, Klin and her colleagues conducted experiments to see if textisms were important in conveying meaning, and if a single word text in response to an invitation was changed by the use of a period. 

With texting, the period is used rhetorically to add meaning instead of strictly grammatically, according to Klin.

Klin had study participants text either an invitation or a single word response to an invitation. The use of a period changed the meaning for many of the texts responding to the invitation. 

“Specifically, when one texter asked a question (e.g., I got a new dog. Wanna come over?), and it was answered with a single word (e.g., yeah), readers understood the response somewhat differently depending if it ended with a period (yeah.) or did not end with a period (yeah),” said Klin. 

According to Klin, the research also reflects the way texting, and textisms, show the evolution of language and communication. As different methods of communication are developed, people invent new language constructs to work with any new advancements. 

The study proves that textisms like emojis and exclamation marks are actually important in conveying meaning, and are a testament to how language evolves. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="http://www.earth.com">Earth.com</a> Staff Writer

Emojis help replace clues from face-to-face communication

In today’s digital age, texting with emojis, abbreviations, GIFs, and...

“Video games won’t get you anywhere!” How many times have kids been told that by their parents? But according to new research from scientists at the <a href="https://www.york.ac.uk/">University of York</a>, video game skill may show a direct correlation to higher intelligence. 

While the researchers make it clear that their findings do not indicate that playing computer games will make a young person smarter, they do indicate that individuals who are more skilled at these games tend to be smarter.

The study focused on “Multiplayer Online Battle Arenas” (MOBAs), which are action strategy games that usually involve two teams of five individuals competing against each other. They also looked a multiplayer “First Person Shooter” (FPS) games, which is one of the most popular game genres today.

The researchers first study analyzed the correlation between performance in the game League of Legends and an individual’s performance in paper-and-pencil intelligence tests. Their second study looked at large datasets from two MOBA games (League of Legends and Defense of the Ancients) and two FPS games (Destiny and Battlefield 3). 

In their second study, the scientists found that for large groups of thousands of players in MOBAs, their performance in the game and IQ behaved in similar ways as player got older. However, for FPS games they found the opposite effect, where performance actually declined after players’ teen years. Athanasios Kokkinakis, a PhD student at York and lead author of the study, elaborates on this, “unlike First Person Shooter (FPS) games where speed and target accuracy are a priority, Multiplayer Online Battle Arenas rely more on memory and the ability to make strategic decisions taking into account multiple factors. It is perhaps for these reasons that we found a strong correlation between skill and intelligence in MOBAs.”

Professor Alex Wade of the University of York – a corresponding author on the paper – says that MOBA games “are complex, socially-interactive and intellectually demanding. Our research would suggest that your performance in these games can be a measure of intelligence.” Wade continues, “Research in the past has pointed to the fact that people who are good at strategy games such as chess tend to score highly at IQ tests. Our research has extended this to games that millions of people across the planet play every day.”

The researchers believe that their findings have the potential to have a big impact on the future of video games and the creative industry, as these games may be able to extend as a tool for research in mental health and psychology. They could also be used as “proxy” tests of IQ, as well as a way to monitor <a href="https://www.earth.com/news/ways-keep-brain-healthy/">cognitive health</a> across populations.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Good news for gamers! Video game skill linked to intelligence

“Video games won’t get you anywhere!” How many times have...

Youths feel the pressure to conform to traditional gender roles, and the extent to which they experience this pressure directly affects their well-being. Researchers explored how the development of gender identity varied among French <a href="https://www.earth.com/news/screen-time-suicide-teens/">teens</a> from different ethnicities and cultures, and closely examined the adolescents’ feelings on the subject.


Adam J. Hoffman is a postdoctoral researcher at the University of Michigan who coauthored the study at the <a href="http://www.unc.edu/">University of North Carolina at Chapel Hill</a>.

"Our study-one of the first to examine these issues longitudinally and outside of the United States-shows that boys experience greater pressure than girls to conform to gender expectations, which most likely places nonconforming adolescent boys at higher risk than girls for psychological distress,"explained Hoffman.

The research team surveyed French adolescents over four years, starting in the sixth grade and following up with them each year until ninth grade. Surveys were collected from 570 European French students and 534 North African French students. All the European French participants were born in France, while the North African French students were from Algeria, Morocco, or Tunisia, with 78 percent born in France. 

The teens were asked to report on how typical they felt of their gender and on the pressure they felt from parents, peers, or themselves to conform to traditional roles. 


In the sixth grade, girls in both groups reported lower levels of feeling typical for their gender, and also reported feeling less pressure to conform than boys. Over the course of four years, all of the teens except North African French boys reported a decrease in how much they felt typical for their gender.

Furthermore, girls in both groups reported feeling less pressure to conform to gender norms over the years they were surveyed, while North African French boys reported feeling an increase in pressure to conform to traditional roles. European French boys reported no change in this category.

"Cultural differences in gender norms provide North African French boys less freedom to deviate from traditional gender roles and norms than that experienced by European French boys," explained co-author Isabelle Regner.

"The greater pressure to conform to gender roles that North African French boys feel may be a response to contrasting messages about social status they are exposed to-one from their ethnic and cultural groups that says masculinity has greater power and prestige, the other from the broader social context that says their ethnic and cultural groups have lower status and are discriminated against."

The authors of the study, which is published in the journal <a href="http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1467-8624">Child Development</a>, say there is a need for parents and teachers to be aware of the variance in traditional gender roles among youths of different cultures. 

--

By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Teen gender identity reflects cultural and ethnic differences

Youths feel the pressure to conform to traditional gender roles,...

People who are more in touch with their own heartbeat may actually be more charitable, according to a new study. 

The research, conducted by scientists from <a href="http://www.anglia.ac.uk/">Anglia Ruskin University</a> and <a href="http://www.su.se/english/">Stockholm University</a>, is the first to attempt to find a physiological connection to charitable giving and altruistic behavior. 

“Despite clear biological and economic advantages of acting in self-interest, people consistently make decisions that benefit others, at a cost to themselves,” said Dr. Richard Piech, a co-author of the study. “Our study suggests that selfless acts may be influenced by signals from the body that reach the brain.”

The researchers set out to see if a physical response could explain why some people are naturally more <a href="https://www.earth.com/news/female-brain-wired-generous/">giving</a> than others. 

For the study, a group of participants was asked to play a computer game where they were continually asked to share sums of money between themselves and someone they hadn’t met before.

At the end of the game, the participants were given real money, but the amounts depended on how much they had given and received by other players. 

The researchers also had the participants complete a task where they had their heartbeat recorded and were then asked to listen to a series of sounds that were either in time or out of sync with their recorded heartbeats. 

The participants that could judge the sounds that were in beat with their own heart were found to be more generous during the giving game. 

The results found that the participant's generosity was directly related to how in tune they were with their heartbeat. 

The researchers note that further research will need to be done to determine exactly why being in touch with your heartbeat may determine your generosity, but the study shows a clear link between the two.

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

People who are in touch with their heartbeats are more generous

People who are more in touch with their own heartbeat...

We live in an age that has been dubbed the Anthropocene era because of how drastically humans have changed the global landscape. From climate change to habitat degradation, human-related activities have played a major part in current conditions. 

Global trade and human-induced climate change, in particular, are now making it easier for pests to spread across the planet, even to those regions that might otherwise have been protected by cold winters. 

Tree-eating insects like bark beetles, wood-boring beetles, and leaf-sucking insects are killing plants and wreaking havoc on forests. Park rangers and forest conservation policies have been unable to keep up as new pests are continually introduced.  

But now, recent research from <a href="http://home.dartmouth.edu/">Dartmouth College</a> and the <a href="http://www.usc.es/en/index.html">University of Santiago de Compostela</a> offers new strategies to manage pests in the era of human-induced <a href="https://www.earth.com/news/humans-driving-climate-change/">climate change</a>.

“Forest managers working in isolation and learning by trial and error cannot possibly keep up with the rapidly changing challenges. We hope that this research can serve as a guidebook for pest management in the Anthropocene,” said Matthew Ayres, a professor of biological sciences at Dartmouth.

Ayres and his colleagues from Dartmouth and Santiago de Compostela in their paper recommended several tactics that can be used to help combat new pests and reduce invasive pests from forests. 

The researchers have outlined eight different tactics, beginning with the use of practical scientific theory. 

To reduce the introduction of new pests or protect forests from invasive species, first researchers need to be thoroughly familiar with the pests and their adaptability to new environments and climates. 

“Understanding the general effects of temperature on insects gives us certainty that continued warming will produce continued changes in where we find pests,” said Ayres. “In some cases, we can make detailed predictions of where pests will be in coming years under different climate scenarios.” 

The other tactics proposed include management plans that anticipate continuing change, improving monitoring, prediction, and mitigation of established pests, and improving biosecurity against future human-aided invasions. 

In addition, the researchers emphasized the importance of different countries sharing intelligence, improved assessments of costs and benefits, accurate assessments of outcomes, and improved relationships between forests and socioeconomic systems.

The research proves that pest management is possible, even with a changing climate and increased global trade.

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette,</a> <a href="https://www.earth.com/">Earth.com</a>, Staff Writer

Strategies for managing new pests brought by climate change

We live in an age that has been dubbed the...

Many studies have proven that negative emotions affect sleep. As we recently reported, <a href="https://www.earth.com/news/bed-angry-bad-health/">going to bed angry</a> makes it harder to relax into sleep and can affect overall health and wellbeing. 

Now, a new study has found that going to bed angry or dwelling on negative memories will make it easier to recall and linger on those experiences later on.

The brain, as it turns out, is programmed to dwell on negative memories and strengthens them while we sleep. Emotions are also a prominent factor in how we recall memories, the stronger the emotion, the better our ability to remember the experience. 

The study was conducted by researchers from the<a href="http://www.bidmc.org/"> Beth Israel Deaconess Medical Centre</a> in Boston. For the study, the researchers had 57 participants view a series of images in each eye. 

The images were either upsetting or neutral, and the research team was able to visually track the different parts of the brain that processed each image. After that, half of the participants went to sleep and the other stayed awake. 

Twelve hours later, researchers asked the participants to remember the images. Those who had gone to sleep were able to remember a higher number of negative images than those who stayed awake. 

The results show that going to bed after experiencing something emotionally upsetting will only strengthen that memory and our ability to recall it later on. 

“This would provide an explanation of how sleep selectively stabilizes emotional memories,” Roy Cox, the study's lead author, told the <a href="https://www.thetimes.co.uk/article/brain-dwells-on-negative-memories-while-we-sleep-w5bxknkf7">Times</a>. 

A previous 2015 study, which also showed similar results, focused on how emotions play an essential role in memory recall. Strong emotions can make both negative and positive memories more vivid. 

Going to sleep angry or dwelling on something embarrassing or upsetting that happened that day isn’t just bad for your sleep, it also means that you will be able to clearly recall that event in the future 

--

By<a href="mailto:kayvandette@gmail.com"> Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com </a>Staff Writer

The brain strengthens bad memories as we sleep

Many studies have proven that negative emotions affect sleep. As...

According to recent research, drinking coffee and eating peanuts, walnuts, and tree nuts have substantial benefits for heart health. People who regularly eat nuts have a lower risk of cardiovascular disease, while drinking <a href="https://www.earth.com/news/climate-change-coffee-industry/">coffee</a> decreases the risk of heart failure and stroke.

A study published in the <a href="http://www.onlinejacc.org/">Journal of the American College of Cardiology</a> is the largest study to examine the link between nut consumption and heart health. The researchers set out to examine the association between specific types of nuts and the incidence of cardiovascular disease.

The analysis examined over 210,000 individuals who had previously engaged in one of three major studies. The participants had self-reported on medical history, lifestyle, and health conditions every two years and the research team was able to follow up on the study subjects for up to 32 years.

The study revealed a consistent inverse connection between total nut consumption and total cardiovascular disease and coronary heart disease. 

In addition, eating walnuts at least once per week was linked to a 19 percent lower risk of cardiovascular disease and 21 percent lower risk of coronary heart disease. Those who had eaten peanuts or tree nuts at least twice per week had a 13 percent lower risk of cardiovascular disease and a 15 percent lower risk of coronary heart disease. 

Overall, participants who consumed five or more servings of nuts a week had a 14 percent lower risk of cardiovascular disease and a 20 percent lower risk of coronary heart disease than participants who rarely or never consumed nuts. 

"Our findings support recommendations of increasing the intake of a variety of nuts, as part of healthy dietary patterns, to reduce the risk of chronic disease in the general populations," said lead author Marta Guasch-Ferre.

Preliminary research reveals similar heart health benefits from coffee. An analysis was developed based on the long-running Framingham Heart Study, which provides information about cardiovascular health based on certain diets.

The analysis revealed that drinking coffee has a significant effect on cardiovascular health. Compared with non-coffee drinkers, those who drank coffee had a reduced risk of developing heart failure by 7 percent and stroke by 8 percent with every additional cup of coffee consumed per week.

The findings of this study are being presented at the <a href="http://professional.heart.org/professional/EducationMeetings/MeetingsLiveCME/ScientificSessions/UCM_316900_Scientific-Sessions.jsp">American Heart Association's Scientific Sessions 2017</a>.

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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Coffee and nuts both found to improve heart health

According to recent research, drinking coffee and eating peanuts, walnuts,...

Laptops, iPhones, iPads, and more have all become major fixtures in the life of the average American. They boost our ability to connect with people all over the world – not to mention the major entertainment factor they provide. But are there repercussions of their prominence in our day-to-day lives?

A new study from <a href="https://www.sdsu.edu/">San Diego State University</a> has found that increased time spent in front of a screen – such as computers, cell phones, and tablets – may be responsible for the rise in <a href="https://www.earth.com/news/ayahuasca-alcoholism-depression/">depression</a> and suicide-related behaviors in young Americans.

Through analysis of questionnaire data from over 500,000 U.S. teens, SDSU professor of psychology Jean Twenge and her team compared these survey responses to suicide statistics from the U.S. Centers for Disease Control and Prevention. The results showed that the suicide rate for girls from ages 13-18 increased by 65 percent between 2010 and 2015, and the number of teen girls reporting symptoms of severe depression increased by 58 percent.

“When I first saw these sudden increases in mental health issues, I wasn’t sure what was causing them,” says Twenge. “But these same surveys ask teens how they spend their leisure time, and between 2010 and 2015, teens increasingly spent more time with screens and less time on other activities.” According to Twenge, no other activity had that significant of a change during that period of time.

In further analysis, the researchers found that 48 percent of teens who spend five or more hours per day on electronic devices reported at least one suicide-related outcome. On the other hand, only 28 percent of those who spent less than an hour a day on these devices reported the same. Furthermore, teens who spent a lot of time on electronic devices were more likely to have depressive symptoms.

The researchers believe their findings show how it important it is for parents to monitor the time their children spend in front of screens. “These increases in mental health issues among teens are very alarming,” Twenge said. “Teens are telling us they are struggling, and we need to take that very seriously.”

Another suggestion would be that we all should be spending less time with our electronic devices and more time engaging in social interaction with our peers. Other positive healthy activities include sports and exercise, attending religious services, and even doing homework! All of these activities are linked to decreased depressive symptoms and fewer suicide-related outcomes.

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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

Screen time linked to increase in depression, suicide in teens

Laptops, iPhones, iPads, and more have all become major fixtures...

The series of deadly <a href="https://www.earth.com/news/ways-heatwaves-kill/">heatwaves</a> that lingered over parts of Europe, Asia, and the Middle East this past spring and summer were just a few examples of the extreme weather events that occurred during 2017. 

Now, a new study projects that weather-related mortality rates may skyrocket as a result of climate change. 

The study was led by researchers from the<a href="https://www.lshtm.ac.uk/"> London School of Hygiene and Tropical Medicine </a>and published in The Lancet Planetary Health journal. 

It is the largest study yet that examines the effects that rising greenhouse gases have on weather-related mortality rates and general well-being. 

The study included data from 451 locations in 23 countries. The researchers used the information to create the first global model of how mortality rates are affected by changes in temperature. The study also factored in 85 million recorded deaths between 1984 and 2015 to help get a better picture of how climate and mortality are related. 

The results show that if emissions continue to rise, many areas will see sharp increases in deaths due to hot weather. The areas most at risk include the Middle East, Southeast Asia, Southern Europe, and South America. In colder regions like Northern Europe, the effects will be less severe.

However, the results also showed that if policies are put in place to mitigate climate change successfully, these death toll increases can be avoided. 

“This study demonstrates the negative impact of climate change, which may be more dramatic among the warmer and more populated areas of the planet, and in some cases disproportionately affect poorer regions of the world,” said Antonio Gasparrini, the lead author of the study. “The good news is that if we take action to reduce global warming, for instance by complying with the thresholds set by the Paris Agreement[1], this impact will be much lower.”

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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: As temperatures rise, so will mortality rates

The series of deadly heatwaves that lingered over parts of...

Scientists are transforming chocolate into a functional food by infusing it with probiotics and prebiotics, aiming to create a treat that satisfies cravings while supporting gut health. 



The challenge lies in maintaining chocolate's beloved texture and flavor while adding health benefits.



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Probiotics - beneficial microbes that balance gut bacteria and aid digestion - are typically fragile and can be destroyed by stomach acid or processing. 



Prebiotics act as food for these microbes, helping them thrive. Together, they form "synbiotics," a powerful health combination.



Researchers Smriti Gaur and Shubhi Singh from India's Jaypee Institute of Information Technology took an innovative approach, using natural prebiotics like corn and honey instead of complex processing methods. 



They created five chocolate varieties: a control and four synbiotic versions containing different combinations of prebiotics, probiotics (Lactobacillus strains), and flavor enhancers (cinnamon or orange).



Laboratory simulations of human digestion showed the probiotics remained viable for over five hours, suggesting they could survive long enough to benefit gut health.



Taste tests were positive, with researchers particularly enjoying the orange-flavored variety, describing it as having "vibrant citrus notes" complementing the "rich cocoa" with a "luxurious" texture.



This research represents just the beginning. With further refinement of strains, textures, and flavors, chocolate could evolve beyond mere indulgence to become a functional food that nourishes while it delights.



The study is published in the journal <a href="https://pubs.acs.org/doi/10.1021/acsfoodscitech.4c00741" target="_blank" rel="noreferrer noopener">ACS Food Science &amp; Technology</a>.

Is chocolate the next nutritional powerhouse?

Scientists are transforming chocolate into a functional food by infusing...

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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

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



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



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



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



Video/Image Credit: ESA&nbsp;



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

Lake Trasimeno in Central Italy

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



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



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



Video Credit: American Chemical Society&nbsp;



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



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

Detecting mercury contamination with the tap of a finger

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



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



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



Video Credit: ACS Reactions



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



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

How does salt makes things taste better?

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



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



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



Video/ Image Credit: ESA



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



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

Santiago, Chile in South America

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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

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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

[sendtonews key="qARzJPSabQ-2270617-12187" 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> 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

[sendtonews key="qas3EhyI0Y-2220951-12187" 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.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

[sendtonews key="vpljfR2VBX-2560867-12187" type="single"] Today's Video of the Day from the...

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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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