Parents often turn to screens to entertain their kids, but a new study uncovered how this might be affecting children's development in unexpected ways.



Dr. Karen Heffler, an associate professor of Psychiatry, has been exploring the impact of screen time on the youngest minds. 



Her recent findings suggest that babies and toddlers who spend time in front of televisions or videos may develop unusual sensory behaviors.



<h2 class="wp-block-heading" id="h-kids-screens-and-sensory-behaviors">Kids, screens, and sensory behaviors</h2>



By the time children reach 33 months old, <a href="https://www.earth.com/news/children-under-two-should-not-be-exposed-to-tv-or-screen-time/" target="_blank" rel="noreferrer noopener">those exposed</a> to screens before age two show signs of "sensation seeking," "sensation avoiding," and "low registration," meaning they might be less responsive or slower to react to stimuli.



"This association could have important implications for attention deficit hyperactivity disorder and autism, as atypical sensory processing is much more prevalent in these populations," explained Dr. Heffler, hailing from <a href="https://drexel.edu/" target="_blank" rel="noreferrer noopener">Drexel University</a>.



Conducted using data from the National Children's Study between 2011 and 2014, the research analyzed information from 1,471 children across the country. 



The team looked at how much time kids spent watching screens at 12, 18, and 24 months, based on what caregivers reported.



<h2 class="wp-block-heading" id="h-understanding-atypical-sensory-behaviors">Understanding atypical sensory behaviors</h2>



Atypical sensory behavior happens when someone experiences their senses -- like sight, sound, touch, taste, or smell -- in ways that are a bit different. 



They might find certain noises way too loud or lights way too bright, even if others don’t seem to notice. 



Some folks can’t stand the feel of clothing tags or certain textures in food. On the flip side, they might crave strong sensations, like wanting to touch everything or enjoying tight hugs. 



These differences in how they process sensory info can impact daily life and social interactions, making some situations feel challenging or overwhelming.



These behaviors were assessed using the <a href="https://www.pearsonassessments.com/store/usassessments/en/Store/Professional-Assessments/Motor-Sensory/Infant-Toddler-Sensory-Profile/p/100000389.html" target="_blank" rel="noreferrer noopener">Infant/Toddler Sensory Profile</a>, a tool that helps identify how children respond to sensory experiences.



<h2 class="wp-block-heading" id="h-worrisome-stats-on-kids-and-screens">Worrisome stats on kids and screens</h2>



The study's statistics are eye-opening:



<ul class="wp-block-list">
<li>At 12 months, any screen exposure was linked to a 105% greater chance of high sensory behaviors related to low registration by 33 months.</li>
</ul>



<ul class="wp-block-list">
<li>At 18 months, each extra hour of daily screen time increased the odds of high sensory behaviors related to sensation avoiding and low registration by 23%.</li>
</ul>



<ul class="wp-block-list">
<li>By 24 months, every additional hour of screen time was associated with a 20% increase in high sensation seeking, sensory sensitivity, and sensation avoiding behaviors at 33 months.</li>
</ul>



<a href="https://drexel.edu/medicine/faculty/profiles/karen-heffler/" target="_blank" rel="noreferrer noopener">Dr. Heffler</a> pointed out that repetitive behavior, such as that seen in autism spectrum disorder, is highly correlated with atypical sensory processing.



"Future work may determine whether early life screen time could fuel the sensory brain hyperconnectivity seen in autism spectrum disorders, such as <a href="https://www.earth.com/news/how-screen-time-changes-the-brain-based-on-23-years-of-research/" target="_blank" rel="noreferrer noopener">heightened brain responses</a> to sensory stimulation," Heffler explained.



<h2 class="wp-block-heading" id="h-what-this-means-for-parents">What this means for parents</h2>



These findings add to growing concerns about screen time's role in developmental challenges like <a href="https://www.earth.com/news/kids-with-too-much-screen-time-struggle-to-gain-language-skills/" target="_blank" rel="noreferrer noopener">language delays</a>, behavioral issues, sleep problems, attention difficulties, and delays in problem-solving skills.



"Considering this link between high screen time and a growing list of developmental and behavioral problems, it may be beneficial for toddlers exhibiting these symptoms to undergo a period of screen time reduction, along with sensory processing practices delivered by occupational therapists," advised Dr. Heffler.



<a href="https://drexel.edu/medicine/faculty/profiles/david-bennett/" target="_blank" rel="noreferrer noopener">David Bennett, PhD</a>, a professor of Psychiatry, emphasized the importance of guidance for parents. "Parent training and education are key to minimizing, or hopefully even avoiding, screen time in children younger than two years," he said.



The <a href="https://www.aap.org/" target="_blank" rel="noreferrer noopener">American Academy of Pediatrics</a> recommends that children under 18 to 24 months avoid screen time altogether. For kids aged 2 to 5 years, digital media use should be limited and carefully managed.



<h2 class="wp-block-heading" id="h-harsh-reality-of-kids-and-screens">Harsh reality of kids and screens</h2>



<a href="https://www.earth.com/news/negative-effects-of-screen-time-offset-by-outdoor-play/" target="_blank" rel="noreferrer noopener">Despite these recommendations</a>, many young children are spending more time with screens than ever before. 



In 2014, children under two years old in the U.S. watched screens for an average of 3 hours and 3 minutes daily, up from 1 hour and 19 minutes per day in 1997.



Some parents <a href="https://www.earth.com/news/how-does-screen-time-affect-preteens-mental-health/" target="_blank" rel="noreferrer noopener">resort to screen time</a> out of sheer exhaustion and a lack of affordable alternatives for keeping their kids occupied. It's a challenge that many families face in today's fast-paced world.



<h2 class="wp-block-heading" id="h-supporting-children-with-sensory-differences">Supporting children with sensory differences</h2>



Atypical sensory behaviors can significantly impact a child's daily life, affecting everything from learning to social interactions. Recognizing and accommodating these needs is crucial.



Supporting kids with sensory differences means understanding their unique experiences and adjusting to meet their needs.



By paying attention to how they respond to sounds, textures, lights, and other stimuli, we can make small changes that help them feel more comfortable.



Simple adjustments like dimming bright lights or creating quiet spaces can really enhance their daily lives. 



Collaborating with professionals like occupational therapists gives us the tools and strategies to help these kids navigate their world with confidence and ease.



Occupational therapists often help by using techniques like sensory integration therapy. Strategies might include creating sensory-friendly environments or using tools like noise-canceling headphones.



<h2 class="wp-block-heading" id="h-kids-screentime-and-the-future">Kids, screentime, and the future</h2>



To sum it all up, the connection between early screen time and sensory processing issues is a complex one that we're just beginning to understand. 



As parents and caregivers, being <a href="https://www.earth.com/news/swedish-pediatricians-no-screen-time-for-children-under-two/" target="_blank" rel="noreferrer noopener">mindful of screen use</a> and staying informed can make a significant difference in our children's development.



Finding alternatives to screen time can be a fun and rewarding challenge. Simple activities like reading together, playing outside, or engaging in imaginative play can provide enriching experiences that support healthy development.



Have you noticed how screen time affects your little one? Share your thoughts and experiences -- your insights could help other parents navigate this important topic.



The study is published in the journal <a href="http://dx.doi.org/10.1001/jamapediatrics.2023.5923" target="_blank" rel="noreferrer noopener">JAMA Pediatrics</a>.



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Autism and ADHD disorders directly linked amount of time kids spend on screens

Parents often turn to screens to entertain their kids, but a new study uncovered how this might be affecting children's development in unexpected ways. Dr. Karen Heffler, an associate professor of Psychiatry, has been exploring the impact of screen time on the youngest minds. Her recent findings suggest that babies and toddlers who spend time in front of televisions or videos may develop unusual sensory behaviors. Kids, screens, and sensory behaviors By the time children reach 33 months old, those exposed to screens before age two show...

If you’ve been present here on Earth for the last few years, you probably noticed the dramatic increase in the number of extreme weather events and natural disasters around the world. In fact, scientists have determined that in recent decades, there has been a significant increase in the frequency and severity of extreme weather climate-related events worldwide. These events are associated with warming temperatures globally, and include occurrences such as monsoons and droughts in India, the destructive hurricane in Puerto Rico, and major flooding in Houston, Texas. 

With <a href="https://www.earth.com/news/humans-driving-climate-change/">climate change</a> increasing the frequency of these events, it’s important that we better understand how human health can be affected in the long-term by natural disasters. Increased understanding may help to develop more effective approaches for planning and response. This was the goal of a recent study published in the <a href="http://www.tandfonline.com/loi/uawm20">Journal of the Air &amp; Waste Management Association</a>.

Dr. Jesse Bell of <a href="https://ncics.org/">North Carolina Institute of Climate Studies</a> and colleagues stress that properly preparing for a disaster response should entail understanding the many complex ways in which these events affect human health. Immediate injuries are one obvious factor, but there are other indirect or delayed health effects that are often overlooked, including mental health impacts.

The authors warn that as the climate changes, planning for these disasters based on historical examples alone will be unlikely to provide the complete picture of potential health threats. With climate change becoming more of a factor, historical norms alone aren’t going to be sufficient for linking extreme weather events to long-term health outcomes.

It is suggested that healthcare facilities should work to determine their vulnerabilities in local infrastructure in order to be fully prepared for a natural disaster. Issues such as overcrowding, loss of power, reduction of staff, and problematic location could play a major part in exacerbating short and long-term health problems. 

“Some of the associations between extreme events and health are already understood,” the authors say. “But many opportunities exist for exploring additional linkages and pathways.” Along with further research, there should be an increased effort to coordinate institutional, government, and private sector programs in order to help with recovery after a natural disaster as assist in rebuilding necessary infrastructure, while also supporting the public.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

What are the long-term health effects of natural disasters?

If you’ve been present here on Earth for the last...

The idea of “love at first sight” has been a popular trope for years, but a new study has found that those feelings of instant attraction are not love. 

According to researchers from the <a href="http://www.rug.nl/?lang=en">University of Groningen </a>in the Netherlands, love at first sight, or LAFS, is a commonly used but rarely scientifically studied phenomenon. Ultimately though, those initial feelings are more about <a href="https://www.earth.com/video/romantic-attraction-predicted/">physical attraction</a> and lust. 

LAFS could be the result of several factors including infatuation and biased memory, but for this study, the researchers wanted to take a more scientific approach and examine a person’s reasons for falling in love at first sight. 

For the study, the researchers asked participants to respond to an online survey and take part in three dating events. The events were face-to-face dating, speed dating, and an informal gathering for mingling where the researchers provided food.  

There were 396 volunteers for the study, and the researchers had the participants fill out questionnaires before any of the dating events. 

After analyzing the survey responses, the questionnaires, and the different dates, the results show that a majority of the participants did not mention love at first sight or say they experienced it. 

In fact, LAFS was only brought up 49 times by 32 different individuals. No matter how many times LAFS was reported, the researchers noted that love at first sight in the study was strongly linked to levels of attractiveness. 

For every one unit increase of physical attraction, the probability of love at first sight being mentioned was nine times greater. 

“As hypothesized, those who reported LAFS experienced strong physical attraction toward their dates,” said the study authors. “Physical attraction strongly increased the likelihood of LAFS.”

The research is a major step forward in differentiating emotions of attraction. By taking love at first sight out of romance stories and putting it in a lab setting, it’s easier to deconstruct and identify where those initial knee-jerk feelings of high attraction come from. In this case, it turns out those emotions are more linked to desirability and physical attraction than long-term perspective.

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com </a>Staff Writer

Love at first sight has little to do with love, study finds

The idea of “love at first sight” has been a...

<a href="https://www.earth.com/news/cold-winter-weather-later/">Winter</a> is coming in the Northern hemisphere, and for many colder places that means the arrival of snow and ice – always a hazard for drivers and pedestrians alike. However, new research published in <a href="http://www.tandfonline.com/loi/laps20">Applied Spectroscopy Reviews</a> suggests an improved, safer method for dealing with dangerous icy roads.

Researchers have detected a substance known as hydrohalite that forms on icy roads and can be very problematic for drivers. Because it does not respond to de-icing or road surface salting, hydrohalite usually stays on the road. Although it isn’t visible to the naked eye, this substance presents a major threat to all drivers if left untreated.

In order to test for a solution to removing hydrohalite, Dr. Rolf W. Berg – associate professor in the <a href="http://www.dtu.dk/english">Technical University of Denmark</a>’s Department of Chemistry – and colleagues recreated the conditions under which hydrohalite forms. During their experiments, they found that this substance can be easily detected by using Raman instruments, which are small laser devices that can identify the structure of a molecule and the presence of a substance.

If Raman instruments were installed in salt-spreading trucks and snow plows, either an automated system or the driver would be able to determine where the substance needs to be removed. In doing so, they could switch to a more appropriate de-icer for hydrohalite removal, which would consist of one mixed with sand and gravel.

“Equipping salt-spreading trucks with Raman detectors - essentially small boxes which would sit underneath the vehicles - would be a relatively straightforward solution,” says Berg, “potentially reducing the number of road traffic accidents and even saving lives.”

With millions of car accidents occurring in the U.S. alone each year, finding ways to improve road safety and thus decrease accidents is always a welcome area of study.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

New laser technology could help clear up icy roads in the winter

Winter is coming in the Northern hemisphere, and for many...

There’s no denying global <a href="https://www.earth.com/news/humans-driving-climate-change/">climate change</a>... unless of course you specifically try and ignore facts. A new study has found that popular climate change denying websites and blogs do just that, by relying only on other blogs and websites instead of taking facts from scientific studies. 

Unfortunately, no matter how contestable the less than reputable stories are, there are many people who take information as fact, regardless of the source. 

On one side you have science-driven arguments, proving that an increase in greenhouse gas emissions caused by human-driven activities is warming our planet. On the other side, you have climate change deniers, who call the whole thing a hoax.

Researchers from the <a href="https://nioo.knaw.nl/en">Netherlands Institute of Ecology</a> examined climate blogs and found that even though climate deniers had almost no basis in fact, they had a much stronger social media influence than science-based blogs. 

“We found a major gap between the facts from scientific literature and the science-based blogs on the one hand, and the opinions aired in climate-change denying blogs on the other,” said Jeff Harvey, the first author of the study. “It's a very dangerous gap, as these blogs are read by millions.” 

According to the study authors, polar bears are the “poster species” of anthropogenic global warming. Polar bears, melting sea ice, weather extremes, these are all used as evidence of the impacts of global climate change. 

However, blogs devoted to climate change denial often downplay or disregard how climate change is negatively affecting polar bears and cast doubt on climate change arguments.  

For the study, the researcher read through 90 climate blogs and 92 scientific papers. Of those, 45 denier blogs didn’t include peer-reviewed evidence in the scientific papers and instead took their information from other climate denying blogs. 

80 percent of the climate-denying blogs got their facts from one blog that had no original research. 

45 of the science-based blogs did match up with the scientific papers, but there was a major gap between the blogs based in scientific fact and the ones just borrowing information from other similar blogs and websites. 

The researchers say this study is an opportunity to show how science-based blogs and climate change scientists can combat deniers by engaging more with the public on social media platforms. 

“Scientists, climb down from your desk and start to counter the misinformation on social media directly - and via the traditional media as well,” said Harvey. “Engage with the public via the blogosphere or citizen science for example. And very importantly, adjust your focus to what is clear instead of all the uncertain things still to be studied.” 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>,<a href="https://www.earth.com/"> Earth.com</a> Staff Writer

Image Credit: Ian Sterling

Fact vs opinion: Battling climate change misinformation online

There’s no denying global climate change... unless of course you...

Although stressful conditions cause infants to have a greater brain response to pain, this experience is not apparent in their behavior. According to new research, stress triggers a disconnect between brain activity and behavior in babies.

"When newborn babies experience a painful procedure, there is a reasonably well coordinated increase in their brain activity and their behavioral responses, such as crying and grimacing,"said study co-author Laura Jones of the <a href="https://www.ucl.ac.uk/">University College London</a>. "Babies who are stressed have a larger response in the brain following a painful procedure. But, for these babies, this greater brain activity is no longer matched by their behavior."

The research team set out to determine if stress causes more pain in <a href="https://www.earth.com/news/babies-intuition/">babies</a>, which is often the case with adults. The researchers examined 56 healthy newborns, measuring their stress levels based on heart rate patterns and the stress hormone cortisol. 

Stress was measured both before and after the babies underwent a minor procedure. Pain response was measured using EEG brain activity and facial expression.

The study showed that babies with higher levels of stress showed a bigger brain reaction to the procedure. This heightened brain activity, however, was not matched by the behavior of the babies.

While the increased brain response to stress did not come as a surprise, the researchers expected that the behavior of the babies would reflect their intensified perception of pain.

According to Laura Jones, the findings of the research reinforce the need to treat and care for babies in ways that minimize both pain and stress. Even though the brain is processing the pain, stressed babies may not appear to be experiencing more pain.

"This means that caregivers may underestimate a baby's pain experience," said Jones.

The researchers plan to explore how previous experiences may also influence the way newborns process and respond to pain. The study is published in <a href="http://www.cell.com/current-biology/home">Current Biology</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Stress causes babies pain that they can’t express

Although stressful conditions cause infants to have a greater brain...

An interdisciplinary team of researchers has discovered that the genetic makeup of skin pigmentation is much more elaborate than previously realized. Despite the fact that skin pigmentation is almost entirely inherited, it is far from uncomplicated.

Previous research has suggested that the genetics of human skin color are simple and straightforward. It has been assumed that a small number of genes account for about half of pigment variation. These studies, however, were primarily based only on northern Eurasian populations.

Researchers from the <a href="https://www.broadinstitute.org/">Broad Institute</a>, <a href="https://www.stanford.edu/">Stanford University</a>, and <a href="http://www.stonybrook.edu/">Stony Brook University</a> focused an investigation on the KhoeSan, a group of populations native to southern Africa. Over the course of seven years, the research team spent time with the KhoeSan, interviewing individuals and taking measurements of height, age, gender, and skin color. 

Samples for nearly 400 people were individually genotyped and compared to a dataset that included 5,000 representatives of <a href="https://www.earth.com/news/insecticide-resistance-spreads-africa/">Africa</a>, Asia, and Europe. The study revealed that the genetics of skin pigmentation became progressively complex the closer that populations were to the equator. The number of genes involved in skin color, both known and unknown, also increased in the direction of the equator.

"Africa has the greatest amount of phenotypic variability in skin color, and yet it's been underrepresented in large scale endeavors," said study co-author Alicia Martin. "There are some genes that are known to contribute to skin pigmentation, but by and large there are many more new genes that have not been discovered."

Study co-author Brenna Henn added, "We need to spend more time focusing on these understudied populations in order to gain deeper genetic insights.”

The widely accepted theory has been that "directional selection" moves pigmentation in a single direction, from dark to light in high latitudes and from light to dark in lower latitudes. But now, the findings of this study introduce a system that is much more complex. 

The concept of directional selection seems to hold up in far northern latitudes. As populations move closer to the equator, however, an increasing number of genes begin to influence variability.

"Southern African KhoeSan ancestry appears to neither lighten or darken skin," said Martin. "Rather, it just increases variation. In fact, the KhoeSan are approximately fifty percent lighter than equatorial Africans. Ultimately, in northern latitudes pigmentation is more homogenous, while in lower latitudes, it's more diverse--both genetically and phenotypically."

The study appears in the November 30 issue of <a href="http://www.cell.com/">Cell</a>.

--
By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

The color of human skin is more complicated than experts thought

An interdisciplinary team of researchers has discovered that the genetic...

New government-backed refrigeration guidance out of the United Kingdom is suggesting that fruit produce such as apples, oranges, and pears should be kept in the fridge in order to keep them fresher longer. What is big government doing in my fridge, you ask? Well, the research was conducted in an effort to cut down food waste as well as simplify labeling on certain foods. 

According to the <a href="http://www.wrap.org.uk/">Waste and Resources Action Programme</a> (WRAP), refrigerating these types of produce could add three days to their shelf life. For perishable foods, the best way to store them for longevity is in the original packaging in a fridge where the temperature is kept below 5°C. 

WRAP has issued new labeling guidance to supermarkets, recommending a blue fridge logo be added to certain food packaging alongside a label saying “store in the fridge below 5°C.” WRAP says, “Only one third of UK fridges are set within the recommended temperature range, below 5°C, and another third operate above 9°C. Ensuring the correct temperatures for household fridges and storing the right foods in the fridge can add an average of three days life to food, and save households £280 million a year.”

They believe that this measure, along with additional simplification of food labels, might cut <a href="https://www.earth.com/news/14-billion-dollars-edible-foods-trashed/">food waste</a> by 350,000 tons per year by 2023, and save consumers £1 billion. Other measures such as reducing the number of date labels on products to reduce confusion and reinstating a snowflake logo on all products suitable for freezing.

Products past their “best before” date can be eaten safely (according to WRAP) and can also be redistributed to food banks and other charities. They say that making this clear would mean the potential to increase food redistribution four-fold by 2025, the equivalent of at least 360 million meals a year.

WRAP says, “to tackle household food waste there needs to be a shift in actions taken at home and we are calling on people to love their labels; stressing that we all need to take the time to note these important guides, understand what they tell us – and act on this advice.” These guides are backed by the government and the Food Standards Agency (FSA)

All food businesses are also encouraged to use WRAP’s guidelines in order to help inform their customers on proper refrigeration and overall safe food consumption. The Chairman of the FSA, Heather Hancock, believes that these new guidelines would reduce food waste without compromising safety.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

New guidelines say fruit should be kept in the fridge, not a bowl

New government-backed refrigeration guidance out of the United Kingdom is...

Researchers from the <a href="https://www.hsph.harvard.edu/">Harvard T.H. Chan School of Public Health</a> have found that excess weight in childhood is a strong predictor of adult obesity. At the current rate of child obesity, over half of the children living in the United States today will be obese at age 35. 

"Adult obesity is linked with increased risk of diseases such as diabetes, heart disease, and cancer," said study lead author Zachary Ward. "Our findings highlight the importance of prevention efforts for all children as they grow up, and of providing early interventions for children with obesity to minimize their risk of serious illness in the future."

The researchers combined advanced computational methods with a new statistical approach to account for long-term <a href="https://www.earth.com/news/eating-fast-bad-heart/">weight gain</a> trends in the United States. Using height and weight data from five longitudinal studies of 41,567 individuals, they developed 1,000 virtual populations of children.

Each simulated population contained 1 million children up to age 19 to represent the population of the United States in 2016. Next, the researchers predicted height and weight trajectories from childhood to age 35.

The results of the study showed that obesity will be an issue for over 57 percent of children in the United States as they grow older. Out of all of the children projected to have adult obesity, half will develop it as children. 

The authors of the study explained that excess weight gained during childhood can put children on a course that is difficult to change. The research demonstrated that 75 percent of overweight two-year-olds will still have obesity at age 35.

Severe obesity, which currently affects 4.5 million children in the United States, increases the risk of adult obesity even more. For example, severely obese five-year-olds only have a 1 in 10 chance of not having obesity at age 35. 

The study also revealed that children without weight issues still run a high risk of adult obesity. Many of the youths projected to have obesity as adults are not yet dealing with excess weight in childhood. Furthermore, Hispanic and African Americans are more likely than Caucasians to experience obesity between the ages of 2 and 35.

"It is critically important to implement policies and programs to prevent excess weight gain, starting at an early age,” said study senior author Steven Gortmaker. “Plenty of cost-effective strategies have been identified that promote healthy foods, beverages, and physical activity within school and community settings."

The research will be published in the November 30, 2017 issue of the <a href="http://www.nejm.org/">New England Journal of Medicine</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Over 50 percent of kids in the U.S. will become obese adults

Researchers from the Harvard T.H. Chan School of Public Health...

A recent Pew Research Center study found that almost half of Americans surveyed (46%) say that they could not live without their smartphones. 

To the average American, this finding likely isn’t very surprising. You don’t have to go far in public to see a wide variety of people with their heads down staring at their phone. However, there has been a growing concern that young people may be spending too much time looking at their phones instead of interacting with those around them. This has led scientists to try to determine the effects this may have on the growing brain.

Using magnetic resonance spectroscopy (MRS), <a href="http://www.korea.edu/">Korea University</a>’s professor of neuroradiology Dr. Hyung Suk Seo and his colleagues attempted to gain insight into the brains of smartphone- and internet-addicted teenagers.

Their study analyzed the brains of 38 young people with a mean age of 15.5 years. Half of those surveyed had been diagnosed with internet or <a href="https://www.earth.com/news/smartphones-kids-less-sleep/">smartphone</a> addiction, while the other half were controls. As part of the study, twelve of the addicted participants received nine weeks of cognitive behavioral therapy, modified from a cognitive therapy program for gaming addiction.

The researchers used standardized internet and smartphone addiction tests to measure the severity of internet addiction amongst the subjects. Questions on these tests revolved around the extent to which internet and smartphone use affects daily routines, productivity, social life, sleeping patterns, and feelings. The higher a participant scored on the tests, the more severe their addiction. The results showed that addicted teenagers had significantly higher scores in depression, anxiety, insomnia severity, and impulsivity.

Prior to the behavioral therapy, the researchers performed MRS exams on addicted youth and a single MRS study on the control patients in order to measure levels of gamma aminobutyric acid (GABA). They also measured levels of glutamate-glutamine (Glx). GABA is a neurotransmitter in the brain that inhibits or slows down brain signals, while Glx is a neurotransmitter that causes neurons to become more electrically excited.

The MRS results revealed that the ratio of GABA to Glx was significantly increased in the anterior cingulate cortex of smartphone- and internet-addicted youth prior to therapy when compared to the healthy controls. According to Dr. Seo, the ratios of GABA to creatine and GABA to glutamate were significantly correlated to clinical scales of internet and smartphone addictions, anxiety, and depression. Having too much GABA is linked to side effects such as drowsiness and anxiety.

More research will need to be done in order to flesh out the clinical implications of this study. However, Dr. Seo believes that the increased GABA in the cingulate gyrus shown in smartphone and internet addicts could be related to the functional loss of integration and regulation of processing in the cognitive and emotional neural network. 

Luckily, the GABA to Glx ratios in addicted youth dropped significantly or returned to normal levels after cognitive behavioral therapy. Dr. Seo believes that understanding the pathophysiology behind why addiction leads to these problems will help us better understand and treat these 21st century addictions.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Addiction to smartphones causes imbalances in your brain

A recent Pew Research Center study found that almost half...

Photos by Alastair Fyfe

Prehistoric women who lived during the Neolithic Era and the Bronze Age performed considerable physical labor, from tilling the soil for crops to grinding grain into flour by hand.

A new study has revealed that life was so labor intensive during these times that prehistoric women had stronger arms than today’s top female rowing athletes. 

The study was conducted by researchers from the <a href="https://www.cam.ac.uk/">University of Cambridge</a> and published in the journal Science Advances. 

It’s the first study of its kind to compare the bone strength in prehistoric women to modern women. Previous studies have made similar comparisons but usually to men, and male bones show wear and strain differently. 

“By interpreting women's bones in a female-specific context we can start to see how intensive, variable and laborious their behaviours were, hinting at a hidden history of women's work over thousands of years,” said Alison Macintosh, the lead author. 

The researchers analyzed arm and leg bones of female participants using a small CT scanner. The participants represented a wide range of physical fitness and sedentary lifestyles. 

Among the participants were members of the <a href="http://cuwbc.org.uk/">Cambridge University Women’s Boat Club</a>, who trained twice a day and rowed an average of 120 kilometers a week. 

The CT scans were compared to bones scans of women from early eras when agriculture and <a href="https://www.earth.com/news/farming-changes-greenhouse-gases/">farming</a> were a prominent part of daily life. 

The reason the researchers chose to analyze bone strength is that bones can tell a great deal about the physical strains they’ve been subjected to. 

“It can be easy to forget that bone is a living tissue, one that responds to the rigours we put our bodies through,” said Macintosh. “Physical impact and muscle activity both put strain on bone, called loading. The bone reacts by changing in shape, curvature, thickness and density over time to accommodate repeated strain.” 

The researchers found that Neolithic women from 7,000 years ago had arms bones that were 11 to 16 percent stronger than the rowers. 

Women in the Bronze Age had arm bones that were nine to thirteen percent stronger than the rowers. 

The differences in arm strength make sense, even when you factor in the physical stamina of today’s rowing athletes. Prehistoric women spent much of their time tilling the soil by hand, taking care of livestock, and grinding grain into flour for hours at a time. 

“We can't say specifically what behaviours were causing the bone loading we found. However, a major activity in early agriculture was converting grain into flour, and this was likely performed by women,” said Macintosh.

The study gives a more accurate picture of what life was like for prehistoric women, fairly demonstrating their contribution to day to day work thousands of years ago. 

--

By<a href="mailto:kayvandette@gmail.com"> Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Image Credit: Alastair Fyfe for the University of Cambridge

Prehistoric women had stronger arms than today’s rowing athletes

Prehistoric women who lived during the Neolithic Era and the...

The rise of sea-levels as a result of <a href="https://www.earth.com/news/humans-driving-climate-change/">climate change</a> carries many consequences, particularly for coastal areas and those living in them. But the wide-scale flooding that appears imminent in our future won’t just impact our present, it will also destroy some of our past.

According to a study published in the journal <a href="http://journals.plos.org/plosone/">PLOS ONE</a>, sea-level rise may impact a great number of archaeological and historic sites, cemeteries, and landscapes on the Atlantic and Gulf coasts of the southeastern United States. 

David Anderson of the <a href="https://www.utk.edu/">University of Tennessee</a> and his colleagues estimated the impact of sea-level rise on archaeological sites by analyzing data from the Digital Index of North American Archaeology (DINNA). DINAA pulls together archaeological and historical data sets from numerous sources developed over the past century. This provides a comprehensive window into the history of human settlement for both research communities and the general public today.

The results of the study show that if projected trends in sea-level rise continue, over 13,000 recorded archaeological sites in the southeast alone may be submerged in the next 100 years. This includes over 1,000 sites listed on the National Register of Historic Places as important cultural properties – not to mention how many sites will be lost that have yet to be discovered.

Studies such as this – which rely on large linked data sets like DINAA – are essential to developing plans for sampling, triage, and mitigation efforts across entire regions. The data that is gathered and analyzed is essential for forecasting our future and making public policy decisions about the consequences of man-made climate change. “Developing informatics capabilities at regional and continental scales like DINAA is essential if we are to effectively plan for, and help mitigate, this loss of human history,” explains Anderson.

Now that we have access to this data and the scientists to analyze it, the push for action and results should be the logical next step.

[caption id="attachment_966117" align="aligncenter" width="273"]<a href="https://www.earth.com/wp-content/uploads/2017/11/archaeological-sites.jpg"><img class="size-medium wp-image-966117" src="https://www.earth.com/wp-content/uploads/2017/11/archaeological-sites-273x300.jpg" alt="" width="273" height="300" /></a> Image Credit: Anderson et al., 2017[/caption]

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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

Sea-level rise may destroy over 13,000 U.S. archaeological sites

The rise of sea-levels as a result of climate change...

It has long been thought that prehistoric villagers in the American Southwest survived on corn. But according to new research from the <a href="http://www.uc.edu/">University of Cincinnati</a>, even though corn was an important part of life thousands of years ago, it was not the main fare for all people in that region.

The study was led by Alan Sullivan, a professor of archeology, who argues that prehistoric people who lived near the Grand Canyon burned down the understory of forests and lived off of wild crops. Sullivan’s theory comes from years of research and excavations around the Grand Canyon where no presence of corn as a crop has been found. 

“It's been widely considered that prehistoric peoples of Arizona between A.D. 900 to 1200 were dependent on it,” said Sullivan. “But if corn is lurking out there in the Grand Canyon, it's hiding successfully because we've looked all over and haven't found it.” 

The Grand Canyon is home to vast, dense forests on both the south and north rims in the Upper Basin, and this is where Sullivan and his research team have completed their excavations. The archaeological team found ancient shards of pottery but little evidence of <a href="https://www.earth.com/news/genetically-modifying-corn-nutrition/">corn</a>. 

However, the researchers did identify pollen from the clay pot remnants which date back 1,000 years and found evidence around the excavation sites that point to fires being set to burn the grassy, weedy understory of the forest. 

Sullivan examined ancient tree rings and found no burn scars, which are caused by massive wildfires. If there wasn’t a buildup of underbrush and felled trees, there would be fewer major wildfires. 

The research team also examined the geologic layers at the excavation sites and found that there were more edible plants available during this time, further proof that native plants were the primary foodsource for ancient people around the Grand Canyon. 

The fires not only managed the underbrush but also created ideal soil conditions for ruderals, which are edible plants and quickly spring up after a fire. 

These prehistoric land management practices could help foresters enlist stronger policies that drastically reduce forest fires. 

Controlled burning and clearcutting are common practices by the <a href="https://www.nps.gov/">National Parks Service </a>and the <a href="http://dnr.wi.gov/">Department of Natural Resources</a>, but it is becoming increasingly difficult to control the fire hazards in national forests.

“These forests are unnatural. They're alien to the planet. They have not had any major fires in them in decades,” said Sullivan. “The fuel loads have built up to the point where you get a little ignition source and the fire is catastrophic in ways that they rarely were in the past.” 

Preserving forests in the face of climate change and deforestation is important for conservation, biodiversity, and reducing the risk of wildfires destroying homes in residential areas. Sullivan’s research could help present alternative strategies based off ancient cultivation practices. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com </a>Staff Writer

Prehistoric people in the Southwest relied on fire, not corn

It has long been thought that prehistoric villagers in the...

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



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



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



Video/ Image Credit: ESA



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

Nushagak Bay in southwest Alaska

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



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



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



Video/ Image Credit: American Chemical Society&nbsp;



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



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

Flu viruses are more flexible than expected

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

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



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



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



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



Video/Image Credit: ESA&nbsp;



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

Lake Trasimeno in Central Italy

[sendtonews key="3upvlAaHgO-2256633-12187" 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> describes a new self-powered nanosensor that can instantly detect mercury contamination with the tap of a finger.&nbsp;



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



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



Video Credit: American Chemical Society&nbsp;



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



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

Detecting mercury contamination with the tap of a finger

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

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



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



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



Video Credit: ACS Reactions



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



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

How does salt makes things taste better?

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

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



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



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



Video/ Image Credit: ESA



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



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

Santiago, Chile in South America

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

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

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



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



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



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



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



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



Video Credit: Johns Hopkins&nbsp;



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



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

Interactive map of the universe includes 200,000 galaxies

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

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



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



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



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



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



Video Credit: ESA&nbsp;&nbsp;



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



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

Lesotho: Africa's "Kingdom in the Sky"

[sendtonews key="uV9Lh2fQbV-1760058-12187" type="single"] Lesotho: Africa's "Kingdom in the Sky" Today’s...

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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"

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

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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

Satellites reveal how Earth's systems are interconnected

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

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



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



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



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



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



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



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



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

Tiger sharks are shifting poleward as temperatures rise

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

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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...