In the face of a rapidly globalizing world, the ever-increasing numbers around one of the most prevalent metabolic disorders are alarming. By 2022, the rate of adults worldwide living with either type 1 or type 2 diabetes had shockingly doubled compared to cases in 1990 - reaching a daunting 800 million.



An analysis from The Lancet reveals that about 445 million adults are currently living with diabetes that has not been adequately treated. 



<h2 class="wp-block-heading" id="h-increasing-rate-of-diabetes">Increasing rate of diabetes</h2>



The data presents a startling revelation - India bears the brunt of this health crisis, hosting over a fourth of the world’s <a href="https://www.earth.com/news/type-2-diabetes-heightens-alzheimers-risk/" target="_blank" rel="noreferrer noopener">diabetic adults</a>.



A total of 212 million individuals, trailed by China's 148 million, are combating diabetes across India. This escalating issue is also prevalent in the United States, Pakistan, Indonesia, and Brazil.



Although this study did not distinguish between type 1 and type 2 diabetes in adults, it's widely accepted that the majority of these cases are attributed to type 2 diabetes.



<h2 class="wp-block-heading" id="h-inequalities-in-healthcare">Inequalities in healthcare</h2>



Professor Majid Ezzati of Imperial College London expressed serious concerns about global inequalities in diabetes treatment.



"Our study highlights widening global inequalities in diabetes, with treatment rates stagnating in many low- and middle-income countries where numbers of adults with <a href="https://www.earth.com/news/diabetes-drugs-may-protect-against-dementia/" target="_blank" rel="noreferrer noopener">diabetes</a> are drastically increasing," noted Ezzati.



"This is especially concerning as people with diabetes tend to be younger in low-income countries and, in the absence of effective treatment, are at risk of life-long complications - including amputation, heart disease, kidney damage or vision loss - or in some cases, premature death."



<h2 class="wp-block-heading" id="h-diabetes-rates-an-upward-spiral">Diabetes rates: An upward spiral</h2>



Thanks to the collaborative efforts of the NCD Risk Factor Collaboration and the World Health Organization, we now have a comprehensive analysis of global diabetes rates and treatment. 



This study, which included data from over 140 million individuals aged 18 years and older from various countries, has revealed deeply unsettling truths.



The numbers are a bitter pill to swallow. Since 1990, diabetes rates have doubled for both men and women (rising from 6.8% to 14.3% and from 6.9% to 13.9%, respectively). 



This translates to around 828 million adults living with diabetes in 2022 - a drastic increase from nearly 198 million in 1990.



<h2 class="wp-block-heading" id="h-disparities-across-the-globe">Disparities across the globe</h2>



Not all nations are equal when it comes to <a href="https://www.earth.com/news/deadly-snail-venom-possible-key-to-improving-diabetes-medicine/" target="_blank" rel="noreferrer noopener">diabetes</a> rates. Between 1990 and 2022, low- and middle-income countries (LMICs) saw the biggest increases. 



In contrast, several high-income countries, such as Japan, Canada, and parts of Western Europe, observed no change or only minor decreases in diabetes rates.



In 2022, the prevalence of diabetes was particularly high in the Pacific island nations, the Caribbean, Middle East and North Africa, Pakistan, and Malaysia. On a brighter note, Western Europe, East Africa, Japan, and Canada reported the lowest rates.



Obesity and poor diets have largely fueled the surge in Type 2 diabetes. Areas where obesity is prevalent, or has dramatically increased, faced higher diabetes rates between 1990 to 2022.



<h2 class="wp-block-heading" id="h-addressing-the-global-diabetes-rate">Addressing the global diabetes rate</h2>



Dr. Ranjit Mohan Anjana, an expert at the Madras Diabetes Research Foundation in India, emphasized the need for diabetes prevention through healthier diets, exercise, and strong health policies, specifically in economically disadvantaged regions.



As of 2022, three out of five adults aged 30 years and older with diabetes - and total of 445 million individuals - did not receive adequate medication. The discrepancy in treatment coverage among nations is striking, with Belgium maintaining the highest rates.



<h2 class="wp-block-heading" id="h-coverage-for-diabetes-treatment">Coverage for diabetes treatment </h2>



Despite the swelling diabetic populations, the coverage for diabetes treatment in many LMICs remains low. It’s troubling to note that over 90% of people were untreated in 1990, a figure that has not changed substantially even in 2022.



“Our findings suggest there is an increasing share of people with diabetes, especially with untreated diabetes, living in low- and middle-income countries," said Professor Jean Claude Mbanya, <a href="https://uy1.uninet.cm" target="_blank" rel="noreferrer noopener">University of Yaoundé 1</a>, Cameroon. 



"In 2022, only 5-10% of adults with diabetes in some sub-Saharan Africa countries received treatment for <a href="https://www.earth.com/news/insufficient-sleep-increases-diabetes-risk-in-women/" target="_blank" rel="noreferrer noopener">diabetes</a>, leaving a huge number at risk of the serious health complications.” 



The study is published in the journal <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(24)02317-1/fulltext" target="_blank" rel="noreferrer noopener">The Lancet</a>.



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Global diabetes rate has doubled, reaching over 800 million

In the face of a rapidly globalizing world, the ever-increasing numbers around one of the most prevalent metabolic disorders are alarming. By 2022, the rate of adults worldwide living with either type 1 or type 2 diabetes had shockingly doubled compared to cases in 1990 - reaching a daunting 800 million. An analysis from The Lancet reveals that about 445 million adults are currently living with diabetes that has not been adequately treated. Increasing rate of diabetes The data presents a startling revelation - India bears the...

According to a new study from <a href="https://www.psu.edu/">Penn State</a>, most light smokers meet the criteria for nicotine addiction and should be considered for treatment. The researchers report that people who smoke as little as one to four cigarettes a day are likely addicted to nicotine.

"In the past, some considered that only patients who smoke around 10 cigarettes per day or more were addicted, and I still hear that sometimes," said study lead author Professor Jonathan Foulds. "But this study demonstrates that many lighter smokers, even those who do not smoke every day, can be addicted to cigarettes. It also suggests that we need to be more precise when we ask about cigarette smoking frequency."

Duke Professor Jason Oliver said that when assessing nicotine addiction, also known as tobacco use disorder, clinicians are encouraged to fully assess the 11 criteria listed in the 5th edition of the Diagnostic and Statistical Manual (DSM-5). As a shortcut, clinicians usually just ask smokers how many cigarettes they smoke per day, he explained. 

"Lighter smoking is correctly perceived as less harmful than heavy smoking, but it still carries significant health risks. Medical providers sometimes perceive lighter smokers as not addicted and, therefore, not in need of treatment, but this study suggests many of them may have significant difficulty quitting without assistance."

The researchers analyzed data from the National Institutes of Health, including the assessments of more than 6,700 smokers, to determine whether they met the DSM-5 criteria for tobacco use disorder. The study revealed that 85 percent of daily cigarette smokers were addicted to some extent, ranging from mild to moderate to severe addiction.

"Surprisingly, almost two thirds of those smoking only one to four cigarettes per day were addicted, and around a quarter of those smoking less than weekly were addicted," said Professor Foulds.

The researchers found that the severity of cigarette addiction increased with the frequency of smoking. For example, 35 percent of light smokers and 74 percent of heavy smokers were moderately or severely addicted. 

Professor Foulds said that this is the first time that the severity of cigarette addiction has been described across the full range of cigarette use frequency.

Professor Oliver noted that the study sheds light the high prevalence of tobacco use disorder even among those considered to be light smokers and provides a foundation for treating this population.

"Previous research has found that non-daily smokers are more likely than daily smokers to make a quit attempt," said Professor Oliver. "Clinicians should ask about all smoking behavior, including non-daily smoking, as such smokers may still require treatment to successfully quit smoking. Yet, it is unclear the extent to which existing interventions are effective for light smokers. Continued efforts to identify optimal cessation approaches for this population remain an important direction for future research."

The study is published in the <a href="https://www.ajpmonline.org/">American Journal of Preventive Medicine</a>.

---

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

People who smoke just one cigarette a day are likely addicted

According to a new study from Penn State, most light...

Parents worry that their children are getting too much screen time and not enough physical activity during the COVID-19 pandemic, according to the latest C.S. Mott Children's Hospital National Poll on Children's Health at <a href="https://www.uofmhealth.org/">Michigan Medicine</a>. Parents' top concerns also include unhealthy eating, <a href="http://www.earth.com/news/frequent-social-media-use-causes-depression-not-the-other-way-around/">depression</a>, social media use, and internet safety.

Many children are participating in classes online and are less physically connected to their friends. At the same time, they are deprived of activities like sports. Spending more time at home during quarantine has led to major lifestyle changes for kids. 

"This is an especially challenging time for families, with many children experiencing significant changes in routine that may negatively impact their health and well-being," said Mott pediatrician Dr. Gary Freed.

"Parents' biggest concerns for young people seem to be associated with changes in lifestyle as a result of the pandemic. COVID-19 has turned the world of our children and teens upside down in many ways and this is reflected in how parents rate health issues in 2020."

Dr. Freed said it's not surprising that the top three issues on parents' list of concerns are related to screen use. However, he explained that parents should worry less about the amount of screen time and more about how children are using the technology.

"It's important for children and teens to maintain social and family connections that we know are critical for their emotional well-being, especially during a time when they are feeling stressed or isolated. Technology may be an important vehicle for those connections."

Parents should still establish clear rules and boundaries about how and when electronic devices can be used to ensure that sleep is not disrupted, healthy habits are not replaced, and that the privacy of their children is protected. They should also watch for any signs of cyberbullying and other types of online abuse, which also made the top 10 list of concerns.

"Parents need to have ongoing conversations with their children and teens to guide them on safe internet practices," said Dr. Freed.

Some of the survey respondents reported great concern over negative emotions expressed more frequently by their kids, such as stress, anxiety, or depression. These emotions may be caused or exacerbated by lifestyle changes associated with the pandemic.

"Parents may notice changes, such as increased behavioral issues in younger kids or more moodiness or lethargy from older kids and teenagers," said Dr. Freed. He said that parents should encourage children and teens to talk about their feelings and find healthy outlets to help them cope.

Physical health may also be impacted by changes in routine and social isolation from COVID-19. For example, poor sleep habits increase the potential for unhealthy eating and less physical activity.

Families should try to maintain routines and regular sleep schedules and help teens resist the temptation to go to bed much later than usual and sleeping in later, said Dr. Freed.

The researchers also recommend scheduling "unplugged" times to spend together as a family and getting outside daily, even if it is just for a walk.

More details on the latest C.S. Mott Children's Hospital National Poll on Children's Health can be found <a href="http://www.med.umich.edu/">here</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

Screen time is a top concern among parents during pandemic

Parents worry that their children are getting too much screen...

In a phenomenon known as the "sunk cost" effect, people follow through with things they have already invested in - even when those efforts are futile. Time invested in a <a href="http://www.earth.com/news/positive-student-teacher-relationships-improve-long-term-health/">relationship</a> may cause us to stick with it longer than we should, while money dumped into a pointless project may encourage us to keep spending on it.

In a new study from <a href="https://www.gsu.edu/">Georgia State</a>, experts have demonstrated that humans are not the only ones to engage in such potentially self-defeating behavior, and that monkeys also have a tendency to persist at tasks they have invested in. 

The researchers have identified factors that could possibly play a role in the sunk costs effect. For example, humans and monkeys likely share an evolutionarily preserved mechanism that helps us balance the costs and benefits of our actions.

Both capuchin monkeys and rhesus macaques are housed at Georgia State's Language Research Center. The monkeys participate in entirely voluntary and non-invasive cognitive and behavioral research, explained study co-author Professor Sarah F. Brosnan, who has worked with some of the monkeys for over 20 years. "They're like my second set of kids."

For the investigation, 26 capuchin monkeys and 7 rhesus macaques were trained to play a simple video game. Using a joystick, the monkeys attempted to move a cursor onto a moving target and hold it there as the target kept moving. 

If the monkeys were successful, they heard a victory sound and were given a treat. Those who were unsuccessful did not get a reward before moving on to a new round, which lasted either 1, 3, or 7 seconds. 

"Monkeys have really quick reaction times on these games, so one second to them is actually a long time," explained Professor Brosnan.

Study lead author Julia Watzek noted that most of the rounds only lasted one second. "So if you didn't get a reward after that, it was actually better to quit and start a new round. That would likely get you a treat sooner than if you had kept going."

During the experiments, both species of monkeys showed sunk cost effects. "They persisted 5 to 7 times longer than was optimal, and the longer they had already tried, the more likely they were to complete the entire task," said Professor Brosnan.

The researchers found that uncertainty had a big influence on persistence. When the monkeys got a signal that additional work was required, they were less susceptible to sunk cost behavior, but they still demonstrated it.

According to Watzek, studying this phenomenon in animals teaches us something about how their minds work, as well as our own. 

Professor Brosnan said the findings suggest that this behavior is likely driven by evolution and deeply embedded across species. "The epitome of the sunk cost is I've invested so much in this, I'm just going to keep going." And this can really pay off when it comes to important tasks such as hunting prey, looking for a mate, or building a nest. "Sometimes, you just need to have patience."

The research also indicates that human concerns - like not giving up on something we have publicly committed to - are probably not the main drivers of sunk cost behavior. The study is also a good reminder that there are times when you have good reason to give up.

"We're predisposed to keep trying," said Professor Brosnan. "And when we find ourselves sticking with things, we should also be a little reflective. Do I have a good reason to keep trying? Or should I leave with no reward, because it will save me more in the long run? That's really hard to do. But hopefully we can use our cognitive abilities to help us overcome the emotional heartache of occasional sunk costs."

The study is published in the journal <a href="https://www.nature.com/srep">Scientific Reports</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

Monkeys and humans keep trying, even when we should give up

In a phenomenon known as the "sunk cost" effect, people...

People value nature more during COVID-19 pandemic. The COVID-19 <a href="http://www.earth.com/news/the-covid-19-pandemic-has-caused-severe-sleep-disruptions/">pandemic</a> has changed the relationship that many Americans have with nature, according to a new study from the <a href="https://www.uvm.edu/">University of Vermont</a>. The researchers found that more than 25 percent of people who visited parks during the early months of the pandemic had rarely, and in some cases had never, gotten out and explored nature in the previous year.

"Like many people, we noticed a large increase in the number of visitors to urban forests and parks in the early days of the pandemic," said study senior author Brendan Fisher. "We wanted to understand how people are using local nature to cope with the physical and mental challenges of the COVID-19 pandemic." People value nature more during COVID-19 pandemic

For the investigation, the researchers surveyed visitors to 25 parks and natural areas around Burlington, Vermont. This region is home to 214,000 residents, which is about one third of the state's population. The UVM team surveyed over 400 people around the time that businesses and schools closed and travel restrictions were issued.  

More than 81 percent of the survey respondents reported that having access to parks and nature areas had become more important to them after COVID-19 health protocols were introduced. Many people said that these natural areas provided them with safe spaces to socialize during COVID-19.

The most common reasons for visiting parks were getting outside, exercising, connecting with nature, finding peace and quiet, birding, dog walking, and spending time with children. The survey revealed that 66 percent of park visitors used natural areas to find peace and quiet, while 32 percent reported using outdoor areas as spaces for contemplation.

"Access to urban natural areas may be delivering mental health benefits during a time when they are most needed," said Fisher. "People need more space for peace and contemplation and safe spaces to be social when so many other outlets are closed to them."

The researchers noted that demand for green space is increasing at a time when many urban communities are losing natural areas.

"Infectious disease experts predict that viruses, like those causing COVID-19, will increase in frequency in the future," said study lead author Nelson Grima. "Natural areas and their budgets should be safeguarded and, if possible, enhanced to maintain and improve human wellbeing especially in times of crises, even during a declining economy."

The study is published in the journal <a href="https://plos.org/">PLOS ONE</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

People value nature more during COVID-19 pandemic

People value nature more during COVID-19 pandemic. The COVID-19 pandemic...

The results of a recent survey indicate that the <a href="http://www.earth.com/news/the-psychiatric-impacts-of-the-covid-19-pandemic-are-far-reaching/">COVID-19</a> pandemic has affected the sleep habits of at least half of adults. According to the study, sleep disruptions have led to an increase in self-reported levels of stress and medication use. 

Study lead author Dr. Rébecca Robillard is the co-director of the Sleep Laboratory in the School of Psychology at the <a href="https://www.uottawa.ca/en">University of Ottawa</a> and the head scientist of the Sleep Research Unit at The Royal Institute of Mental Health Research.

In collaboration with nearly two dozen scientists from across North America, Dr. Robillard conducted an online survey of 5,525 Canadians during the early phase of the COVID-19 pandemic. 

"The pandemic is having a diverse impact on people's sleep, with clinically meaningful sleep difficulties having undergone a sharp increase," said Dr. Robillard. 

"We found that half of our participants showed signs of serious sleep problems during the pandemic. Specifically, we identified three different profiles of sleep changes: those who sleep more; those whose sleep schedule was pushed to later bed and wake-up times; and those who are getting less sleep than they did before the pandemic."

Dr. Robillard said that significant changes in sleep patterns during the pandemic have not only affected sleep quality and quantity, but have also affected the psychological response that people are having to this unprecedented situation. 

"Compared to those who are sleeping more, those who have later sleep schedules or shorter sleep cycles showed increased symptoms of insomnia and worsening symptoms of stress, anxiety, and depression."

The survey results indicate that new sleep difficulties disproportionately affected women, individuals with families, and people with chronic illnesses. Sleep disruptions have also strongly impacted individuals with earlier wake-up times, higher stress levels, heavier alcohol use, and extra television exposure.

"We have seen an increase in the use of sleeping medications during the pandemic. Considering the known risks for the development of tolerance with these medications, this may forecast a surge in more complex chronic insomnia cases in the long run," said Dr. Robillard.

"The large scale of sleep changes in response to the pandemic highlights the need for more accessible, yet tailored interventions to address sleep problems. Sleep and mental health issues are something to be expected with the current circumstances, but we never expected to see it hit this level. It is important to intervene to address the unique phenomenon that we are facing right now."

Dr. Robillard recommends some simple habits that can improve sleeping patterns, such as getting up at the same time every morning, engaging in relaxing pre-sleep rituals such as reading, exercising regularly, and avoiding caffeine and alcohol within six hours of bedtime.

The study is published in the <a href="https://onlinelibrary.wiley.com/loi/13652869">Journal of Sleep Research</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

The COVID-19 pandemic has caused severe sleep disruptions

The results of a recent survey indicate that the COVID-19...

Eating avocados on a daily basis can improve gut health, according to a new study from the <a href="https://illinois.edu/">University of Illinois</a>. A healthy gut is important for maintaining <a href="http://www.earth.com/news/loneliness-strengthens-the-brains-focus-on-imagination-and-planning/">brain</a> function, heart health, effective digestion, and a strong immune system, and may even prevent some cancers and autoimmune diseases.

"We know eating avocados helps you feel full and reduces blood cholesterol concentration, but we did not know how it influences the gut microbes, and the metabolites the microbes produce," said study lead author Sharon Thompson.

The researchers found that people who consumed avocado once per day had a greater abundance of gut microbes that break down fiber and produce beneficial metabolites. Individuals who ate avocados regularly also had greater microbial diversity.

"Microbial metabolites are compounds the microbes produce that influence health," said Thompson. "Avocado consumption reduced bile acids and increased short chain fatty acids. These changes correlate with beneficial health outcomes."

The study was focused on 163 adults between the ages of 25 and 45 who were overweight or obese, but otherwise healthy. The participants received one meal per day as a replacement for either breakfast, lunch, or dinner. One group consumed daily meals that included avocado, while the control group was provided with similar meals that did not include avocado. 

Over the course of 12 weeks, the participants provided blood, urine, and fecal samples. The purpose of the study was to explore the effects of avocado consumption on the gastrointestinal microbiota, explained senior study author Professor Hannah Holscher.

"Our goal was to test the hypothesis that the fats and the fiber in avocados positively affect the gut microbiota. We also wanted to explore the relationships between gut microbes and health outcomes."

The fats in avocados are monounsaturated, which are heart-healthy fats. Soluble fiber content is also very important, noted Professor Holscher. A medium avocado provides around 12 of the 28 to 34 grams of fiber that is recommended each day. 

"Less than 5% of Americans eat enough fiber. Most people consume around 12 to 16 grams of fiber per day. Thus, incorporating avocados in your diet can help get you closer to meeting the fiber recommendation."

According to Professor Holscher, eating fiber is not only good for us, but is also important for the gut microbiome. "We can't break down dietary fibers, but certain gut microbes can. When we consume dietary fiber, it's a win-win for gut microbes and for us."

"Just like we think about heart-healthy meals, we need to also be thinking about gut healthy meals and how to feed the microbiota."

The study is published in the <a href="https://academic.oup.com/jn/advance-article/doi/10.1093/jn/nxaa219/5893497">Journal of Nutrition</a>.

---

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

&nbsp;

A daily dose of avocado improves gut health

Eating avocados on a daily basis can improve gut health,...

In a new study, experts describe how drinking water can protect against metabolic syndrome. The researchers discovered that while fructose stimulates the release of vasopressin, a hormone linked to <a href="http://www.earth.com/news/limiting-tv-commercials-could-help-reduce-childhood-obesity/">obesity</a> and diabetes, water can suppress the hormone and alleviate these conditions in mice.

Study lead author Dr. Miguel A. Lanaspa is an associate professor at the <a href="https://www.cuanschutz.edu/">University of Colorado School of Medicine</a> who specializes in renal disease and hypertension.

"The clinical significance of this work is that it may encourage studies to evaluate whether simple increases in water intake may effectively mitigate obesity and metabolic syndrome," said Dr. Lanaspa.

The researchers set out to investigate why vasopressin, which maintains the body's water levels, is elevated in people with obesity and diabetes. 

In an experiment based on a mouse model, the experts fed mice sugar water - specifically fructose - and noticed that it stimulated the brain to make vasopressin. As a result, the vasopressin stored the water as fat, causing dehydration that triggered obesity. When the mice were treated with non-sugary water, their obesity was reduced.

According to Dr. Lanaspa, this is the first time scientists have shown how vasopressin acts on dietary sugar to cause obesity and diabetes.

"We found that it does this by working through a particular vasopressin receptor known as V1b. This receptor has been known for a while but no one has really understood its function. We found that mice lacking V1b were completely protected from the effects of sugar. We also show that the administration of water can suppress vasopressin and both prevent and treat obesity."

The researchers also discovered that dehydration can stimulate the formation of fat. "This explains why vasopressin is so high in desert mammals as they do not have easy access to water," noted study co-author Dr. Richard Johnson. "So vasopressin conserves water by storing it as fat."

The findings support previous observations that obese patients often exhibit signs of dehydration. The research also explains why high salt diets tend to cause obesity and diabetes.

The study revealed that water therapy effectively protects against metabolic syndrome, which is a collection of coexisting conditions including high blood pressure, high blood sugar, and high triglyceride levels. Metabolic syndrome greatly increases the risk of heart disease, stroke, and type 2 diabetes.

"The best way to block vasopressin is to drink water," said Dr. Lanaspa. "This is hopeful because it means we may have a cheap, easy way of improving our lives and treating metabolic syndrome."

"Sugar drives metabolic syndrome in part by the activation of vasopressin. Vasopressin drives fat production likely as a mechanism for storing metabolic water," concluded said Dr. Johnson. "The potential roles of hydration and salt reduction in the treatment of obesity and metabolic syndrome should be considered."

The study is published in the journal <a href="https://www.ncbi.nlm.nih.gov/pmc/journals/3101/">JCI Insight</a>.

---

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Water is a powerful weapon against obesity and diabetes

In a new study, experts describe how drinking water can...

A simple way to assess your <a href="http://www.earth.com/news/substituting-plant-foods-for-red-meat-reduces-the-risk-of-heart-disease/">heart</a> health is to climb stairs, according to a new study from the <a href="https://www.escardio.org/">European Society of Cardiology</a>. The researchers determined that climbing four flights of stairs in less than a minute indicates good heart health.

Study co-author Dr. Jesús Peteiro is a cardiologist at University Hospital A Coruña in Spain. 

"The stairs test is an easy way to check your heart health," said Dr. Peteiro. "If it takes you more than one-and-a-half minutes to ascend four flights of stairs, your health is suboptimal, and it would be a good idea to consult a doctor."

The researchers set out to investigate the relationship between a common activity like climbing stairs and the results of exercise testing in a laboratory. 

"The idea was to find a simple and inexpensive method of assessing heart health," said Dr. Peteiro. "This can help physicians triage patients for more extensive examinations."

The trial included 165 patients who were referred for exercise testing due to suspected or diagnosed coronary artery disease. Their symptoms included chest pain or shortness of breath during exertion. 

For the tests, the participants walked or ran on a treadmill as the intensity steadily increased, and they continued the activity until exhaustion. The exercise capacity of each individual was measured as metabolic equivalents (METs). 

After resting for 15 to 20 minutes, patients were timed while climbing four flights of stairs, or 60 stairs, at a fast pace without running. The individuals were instructed not to stop moving.

The researchers analyzed the relationship between the METs scores and the time it took to climb the stairs. Patients who climbed the stairs in less than 40 to 45 seconds achieved more than 9 to 10 METs. Previous studies have shown that 10 METs during an exercise test is linked with the low mortality rate of one percent or less per year or 10 percent or less in 10 years. 

By contrast, patients who took 1.5 minutes or longer to climb the stairs achieved less than 8 METs, which translates to a mortality rate of up to four percent per year or 30 percent in 10 years.

During the treadmill test, the researchers used cardiac imaging to assess heart function. If the heart works normally during exercise, this indicates a low likelihood of coronary artery disease. These findings were compared to the results of the stair climbing activity. 

The analysis showed that 58 percent of patients who completed the stair climb in more than 1.5 minutes had abnormal heart function during the treadmill examination. On the other hand, just 32 percent of those who climbed the stairs in less than one minute exhibited abnormal heart function.

Dr. Peteiro noted that the correlation between the stairs time and exercise capacity would be similar in the general population, but the corresponding heart function by imaging would be more favorable for individuals without symptoms of coronary artery disease.

The research was presented at <a href="https://www.escardio.org/Sub-specialty-communities/European-Association-of-Cardiovascular-Imaging-(EACVI)">EACVI</a> - Best of Imaging 2020, a scientific congress of the European Society of Cardiology.

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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

Climbing stairs is a good way to test heart health

A simple way to assess your heart health is to...

Individuals with strong social support have a lower risk of mental <a href="http://www.earth.com/news/ocean-pollution-threatens-the-health-of-more-than-three-billion-people/">health</a> issues. Researchers at <a href="https://www.mcgill.ca/">McGill University</a> have found that the presence and awareness of social support can provide protection against depression, anxiety, and thoughts of suicide. 

In particular, the findings indicate that young adults at the age of 19 who perceived higher levels of social support, or the feeling that there is someone who they can depend on for help if they need it, showed lower levels of depression and anxiety symptoms one year later.

Study lead author Marie-Claude Geoffroy is an assistant professor in the Department of Educational and Counseling Psychology at McGill and holds the Canada Research Chair in Youth Suicide Prevention.

"Our study shows that even in cases where people previously experienced mental health problems, social support was beneficial for mental health later on," said Professor Geoffroy. 

"We discovered potential benefits of promoting and leveraging social support as a means to protect the mental health of young adults, even in individuals who experienced mental health problems at an earlier developmental stage in life. That social support is not only beneficial for depression, but for other salient mental health outcomes as well."

The investigation was focused on data from the Quebec Longitudinal Study on Child Development, which followed over 1,000 participants since their birth in 1997 and 1998. The researchers analyzed levels of perceived social support at the onset of adulthood.

The study revealed that individuals who experienced greater levels of social support experienced 47 percent less severe depression and 22 percent less anxiety. The researchers also found that those who reported higher levels of perceived social support had a 40-percent reduced risk of experiencing suicidal ideation and attempts.

"Our study was conducted before the current COVID-19 pandemic, so we do not know whether our results will apply in the current context," said study co-author Sara Scardera. "However, in a 'normal' context, youth who perceived that they had someone to rely on reported better mental health outcomes. We believe that it is beneficial to offer help to those in need, and to make sure your friends know that they can count on you."

The study is published in the journal <a href="https://jamanetwork.com/journals/jamanetworkopen">JAMA Network Open</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

Social support promotes better mental health

Individuals with strong social support have a lower risk of...

Eating certain foods can help protect us from cognitive decline later in life, according to a new study from <a href="https://www.iastate.edu/">Iowa State University</a>. The researchers found that cheese is linked to the greatest long-term protection against age-related cognitive issues, while a daily dose of red wine is associated with improvements in cognitive function.

"I was pleasantly surprised that our results suggest that responsibly eating cheese and drinking red wine daily are not just good for helping us cope with our current COVID-19 pandemic, but perhaps also dealing with an increasingly complex world that never seems to slow down," said Professor Auriel Willette. 

"While we took into account whether this was just due to what well-off people eat and drink, randomized clinical trials are needed to determine if making easy changes in our diet could help our brains in significant ways."

The researchers analyzed data from the UK Biobank on 1,787 aging adults, who were between the ages of 46 and 77 by the conclusion of the study.

The participants were tested on three separate occasions across ten years from 2006 to 2016. The individuals completed the Fluid Intelligence Test (FIT), which provides a real-time overview of an individual's ability to "think on the fly."

The volunteers also answered questions about their food and alcohol consumption during all three assessments. The Food Frequency Questionnaire was used to document the participants' intake of a wide variety of foods including fruit, vegetables, fish, cheese, bread, tea, beer, wine, liquor, and various types of meat. 

The study revealed that cheese was, by far, the most protective food against age-related cognitive decline, even late in life. The daily consumption of alcohol, especially red wine, was related to improvements in cognitive skills. The weekly consumption of lamb - but not other red meats - was also shown to improve long-term cognitive ability. 

"Depending on the genetic factors you carry, some individuals seem to be more protected from the effects of Alzheimers, while other seem to be at greater risk. That said, I believe the right food choices can prevent the disease and cognitive decline altogether," noted study co-author Brandon Klinedinst.

"Perhaps the silver bullet we're looking for is upgrading how we eat. Knowing what that entails contributes to a better understanding of Alzheimer's and putting this disease in a reverse trajectory."

The study is published in the <a href="https://www.j-alz.com/">Journal of Alzheimer's Disease</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

Red wine and cheese help prevent cognitive decline

Eating certain foods can help protect us from cognitive decline...

Dog owners are more likely to develop type 2 diabetes if their dog has <a href="http://www.earth.com/news/hot-baths-help-lower-risk-factors-associated-with-type-2-diabetes/">diabetes</a>, according to research from <a href="https://www.uu.se/en">Uppsala University</a>. The researchers report that they found no evidence of a shared risk of diabetes among cats and cat owners. 

Previous studies have suggested a link between obesity in dog owners and their pets, which indicates that these pairs may share common health behaviors like physical activity levels. 

More than 400 million people have type 2 diabetes and this number is expected to increase in the coming decades. The projected increase is partly tied to rising rates of obesity.

The study was focused on Swedish veterinary insurance records combined with Swedish population and health registers. From this data, the researchers extracted information on pet owners throughout the country. Overall, more than 175,000 dog owners, nearly 90,000 cat owners, and all of their pets were included in the study.

The analysis revealed that owning a dog with diabetes was associated with a 38-percent higher risk of type 2 diabetes. This estimate did not significantly change after the team adjusted for a range of other risk factors.

The risk of developing diabetes was also 28 percent higher in dogs with an owner who had type 2 diabetes compared with dogs with an owner who did not have type 2 diabetes. 

"Our results indicate that a dog with diabetes in the household might signal an increased risk of the dog owner developing type 2 diabetes as well," said study co-senior author Beatrice Kennedy. 

"We have not had access to information about household lifestyle behaviours, but we think the association might be due to shared physical activity patterns and possibly also shared dietary habits as well as shared risk of adiposity. If shared exercise habits are indeed a key factor, it might further help explain why we don't see any shared diabetes risk in cat owners and their cats."

Because this was an observational study, the underlying cause between the shared risk of diabetes was not established. In addition, the analysis was limited to pet owners with the financial resources to obtained veterinary insurance and who received drug treatment for their diabetes.

Regardless, the researchers say this was a robust study showing that owning a dog with diabetes was associated with an increased risk of type 2 diabetes in the owner, which could not be explained by socioeconomic circumstances.

"Humans and dogs have lived together for at least 15,000 years, and continue to share their everyday lives for better or worse," said study co-senior author Professor Tove Fall.

"In this unique study, we show that there might be common lifestyle and environmental factors that influence the risk of diabetes in the household, both in the dogs and in their owners."

The study is published in the journal <a href="https://www.bmj.com/">The BMJ</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

Dogs share an increased risk of diabetes with their owners

Dog owners are more likely to develop type 2 diabetes...

Young <a href="http://www.earth.com/news/just-two-minutes-of-exercise-boosts-learning-in-young-adults/">adults</a> who are excessively exposed to social media are nearly three times more likely to develop depression, according to research from the <a href="https://www.uark.edu/">University of Arkansas</a>. The study is the first of its kind to expose a nationwide link between social media use and depression over time.

"Most prior work in this area has left us with the chicken-and-egg question," said study lead author Dr. Brian Primack, who is the dean of the College of Education and Health Professions. 

"We know from other large studies that depression and social media use tend to go together, but it's been hard to figure out which came first. This new study sheds light on these questions, because high initial social media use led to increased rates of depression. However, initial depression did not lead to any change in social media use."

In 2018, Dr. Primack collaborated with experts at the University of Pittsburgh to survey more than 1,000 U.S. adults between the ages of 18 and 30. 

The team measured depression using the validated nine-item Patient Health Questionnaire. Study participants reported on the amount of time they used social media platforms like Facebook, Twitter, and Instagram. 

The analysis revealed that young adults who used social media more than 300 minutes per day were 2.8 times as likely to become depressed within six months compared to those who visited the platforms less than 120 minutes per day.

"One reason for these findings may be that social media takes up a lot of time," said study co-author Dr. Cesar Escobar-Viera. "Excess time on social media may displace forming more important in-person relationships, achieving personal or professional goals, or even simply having moments of valuable reflection."

Another explanation, which has been implicated in previous studies, is that increased use of social media presents the opportunity for social comparisons that can undermine one's sense of satisfaction and well-being.

"Social media is often curated to emphasize positive portrayals. This can be especially difficult for young adults who are at critical junctures in life related to identity development and feel that they can't measure up to the impossible ideals they are exposed to," said study co-author Professor Jaime Sidani.

The World Health Organization recently declared depression as the leading global cause of disability, accounting for more disability-adjusted life years than all other mental disorders. Depression linked to loneliness and isolation has become an even greater public health concern during the COVID-19 pandemic this year.  

"These findings are also particularly important to consider in the age of COVID-19," said Dr. Primack. "Now that it's harder to connect socially in person, we're all using more technology like social media. While I think those technologies certainly can be valuable, I'd also encourage people to reflect on which tech experiences are truly useful for them and which ones leave them feeling empty."

The study is published in the <a href="https://www.ajpmonline.org/">American Journal of Preventive Medicine</a>.

---

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Social media causes depression, not the other way around

Young adults who are excessively exposed to social media are...

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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

[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



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Interactive map of the universe includes 200,000 galaxies

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



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



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



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



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



Video Credit: ESA&nbsp;&nbsp;



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



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



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The rapid retreat of the Columbia Glacier

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



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



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



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



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



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



Video &amp; Image Credit: ESA



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



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

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Earth,Like,Exoplanet,3d,Render

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



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



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



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



Video Credit: NASA Goddard



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



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



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

Two distant planets may be "water worlds"

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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...