The low-carb lifestyle has been a point of contention for dieticians and individuals, with some questioning its nutritional value. 



As interest in low-carb diets skyrockets, it is increasingly important to dispel any misconceptions that undermine the potential benefits of a low-carb lifestyle.



<h2 class="wp-block-heading" id="h-new-perspective-on-low-carb-diets">New perspective on low-carb diets</h2>



Recently, a study published in Frontiers in Nutrition busted one of the top myths about low-carb diets - that they leave you undernourished. Contrary to this belief, the research reveals that strategically planned low-carb diets can meet, and sometimes surpass, one’s dietary needs.



According to Dr. Beth Bradley, a co-author of the study from the <a href="https://www.uvm.edu/cals/nfs" target="_blank" rel="noreferrer noopener">University of Vermont’s Department of Nutrition and Food Sciences</a>, many Americans struggle to get the nutrients they need from typical food choices. 



"Low-carb eating patterns can actually help promote better diet quality and close critical nutrient gaps," said Dr. Bradley. 



The researchers evaluated the nutritional composition of three distinct 7-day low-carb meal plans. Two of these were <a href="https://www.earth.com/news/vegan-and-keto-diets-rapidly-transform-the-immune-system/" target="_blank" rel="noreferrer noopener">ketogenic diets</a>, comprising roughly 20 grams and 40 grams of net carbs daily, while the third had around 100 grams of net carbs daily.



All three diets meet the key requirement for low-carb diets, which is under 130 grams of carbs per day.



<h2 class="wp-block-heading" id="h-packed-with-nutrients">Packed with nutrients</h2>



Each of these meal plans exceeded the average nutrient needs for essential vitamins such as A, C, D, E, K, thiamin, riboflavin, niacin, folate, and vitamins B6 and B12. This was applicable for men and women aged 31-70. 



Dr.Bradley emphasized that low-carb eating patterns can actually help promote better diet quality, further dismissing the belief that these diets result in <a href="https://www.earth.com/news/micronutrient-deficiency-rates-are-soaring-worldwide/" target="_blank" rel="noreferrer noopener">nutrient deficiency</a>.



However, for specific sub-populations with higher needs, such as younger women and older adults, a few nutrients like iron and calcium might fall slightly short. This highlights the importance of individualized nutritional planning when adopting a <a href="https://www.earth.com/news/what-exactly-constitutes-a-low-carb-diet/" target="_blank" rel="noreferrer noopener">low-carb lifestyle</a>.



<h2 class="wp-block-heading" id="h-how-about-fiber">How about fiber?</h2>



One of the most notable findings from the study revolved around fiber. The meal plans with 40 grams and 100 grams of net carbs succeeded in meeting the daily fiber needs of women aged 31-70.



“The idea that a low-carb diet must also be low in fiber is simply not supported by the data,” noted Dr. Bradley. She emphasized that “high-fiber foods are actually an important part of a low-carb lifestyle, in part because <a href="https://www.earth.com/news/fiber-rich-diets-reduce-antimicrobial-resistance-in-the-gut/" target="_blank" rel="noreferrer noopener">fiber-rich</a> food choices can help lower net carbohydrate intake.”



<h2 class="wp-block-heading" id="h-protein-and-fat-consumption">Protein and fat consumption</h2>



While the protein content of these meal plans exceeded the Recommended Dietary Allowance (RDA), they still fell within the Acceptable Macronutrient Distribution Range of 10-35% of daily calories. The diets were lower in saturated fat and sodium compared to the average <a href="https://www.earth.com/news/healthier-american-diets-could-greatly-benefit-the-environment/" target="_blank" rel="noreferrer noopener">American diet</a>.



However, the diets slightly exceeded recommendations for these components, providing more beneficial omega-6 to omega-3 and sodium to potassium ratios.



“Which foods your nutrients come from and how they fit within the broader context of your overall diet may play a more important role in determining health outcomes," said Dr. Bradley. 



<h2 class="wp-block-heading" id="h-a-new-era-of-low-carb-lifestyles">A new era of low-carb lifestyles</h2>



The research ultimately reinforces evidence that supports the role of a low-carb lifestyle in promoting a balanced diet, overall well-being, and controlling or even reversing diet-related diseases.



While some individuals may need dietary supplements to meet their personal needs, a low-carb diet provides a robust nutritional foundation for a healthy lifestyle.



<h2 class="wp-block-heading" id="h-broader-health-implications-of-low-carb-diets">Broader health implications of low-carb diets</h2>



Low-carb diets go beyond improving nutrient intake; they also have significant implications for managing chronic conditions. For individuals with metabolic disorders like type 2 diabetes, low-carb diets help regulate blood sugar and improve insulin sensitivity.



These diets are also linked to better cardiovascular health, as they can improve omega-6 to omega-3 ratios and balance sodium and potassium intake, reducing the risk of heart disease and high blood pressure.



In terms of <a href="https://www.earth.com/news/plant-based-foods-are-great-for-weight-loss-regardless-of-the-type/" target="_blank" rel="noreferrer noopener">weight management</a>, low-carb diets can promote satiety and reduce overall calorie consumption, making them a sustainable option for those aiming to manage their weight. 



While not a universal solution, the potential benefits of low-carb diets make them a valuable tool in supporting overall health.



The study is published in the journal <a href="https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2024.1449109/full" target="_blank" rel="noreferrer noopener">Frontiers in Nutrition</a>.



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Low-carb diets have more nutritional value than expected

The low-carb lifestyle has been a point of contention for dieticians and individuals, with some questioning its nutritional value. As interest in low-carb diets skyrockets, it is increasingly important to dispel any misconceptions that undermine the potential benefits of a low-carb lifestyle. New perspective on low-carb diets Recently, a study published in Frontiers in Nutrition busted one of the top myths about low-carb diets - that they leave you undernourished. Contrary to this belief, the research reveals that strategically planned low-carb diets can meet, and sometimes surpass,...

A new study has found that binge watching your favorite TV shows can ruin your quality of sleep. Unlike regular TV viewing, binge watching was linked with poorer sleep quality, higher fatigue, and increased <a href="https://www.earth.com/video/insomnia-cure-camping/">insomnia</a>.

Binge-watching refers to watching multiple episodes or entire seasons in a one or few sittings, as opposed to the regular weekly episodic viewing that cable TV programming provides. 

Researchers from the <a href="https://umich.edu/">University of Michigan</a> and the <a href="https://www.kuleuven.be/wieiswie/en/unit/50019224">Leuven School for Mass Communication Research</a> in Belgium examined the watching habits and sleep quality of 423 adults between the ages of 18 and 25.

The study found that binge watching had an adverse impact on quality of sleep while regular TV watching did not. 

Of those who participated in the study, the majority agreed that they had binge-watched to some extent, and almost 40% did it once a month, while only 7% of the participants reported daily habitual binging. 

Those who binge-watched reported getting a normal amount of sleep a night, around seven hours, but with a severely degraded quality of sleep. Participants who were frequent binge watchers were found to have more insomnia and fatigue compared to non binge-watchers. 

The study also looked at mental alertness after watching intense programming like Game of Thrones and how it affected sleep. The action and intensity of certain shows make it easy to get engrossed in the story, and in turn, make it more difficult to then fall asleep.

"We think they become intensely involved with the content and may keep thinking about it when they want to go to sleep,” said Liese Exelmans, the study’s lead author and a researcher at the Leuven School.

Sleep is essential to keeping our bodies functioning properly, and poor sleep quality can open the door to memory problems, hinder the brain’s ability to retain and learn new information, and cause hypertension and cardiovascular disease. That is why studies that can prove risk factors, such as binge-watching, to sleep quality are important to understanding how to better maintain and create healthy sleep cycles. 

--

By <a href="mailto:kayvandette@gmai.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Binge watching TV shows can harm your quality of sleep

A new study has found that binge watching your favorite...

New research published in the <a href="http://www.ajog.org/">American Journal of Obstetrics and Gynecology</a> finds that even small exposures to some of the toxic chemicals in today’s beauty products can cause health problems – and this issue disproportionately affects women of color. 

The beauty product industry is estimated to bring in roughly $400 billion globally. A lot of this money comes from black, Latina, and Asian-American women, who spend more on beauty products than the national average.

“Pressure to meet Western standards of beauty means Black, Latina and Asian American women are using more beauty products and thus are exposed to higher levels of chemicals known to be harmful to health,” says Ami Zota, an assistant professor of environmental and occupational health at <a href="https://www.gwu.edu/">George Washington University</a>. “Beauty product use is a critical but underappreciated source of reproductive harm and environmental injustice.”

The authors point out that marketing practices often emphasize a “European standard of beauty.” Women of color may buy products such as skin lightening face cream, which can contain ingredients like topical steroids or even mercury. Black women are also more likely to suffer anxiety about having “bad hair,” and are twice as likely to experience social pressure to straighten their hair. According to this study, hair products like relaxers or straighteners sometimes contain estrogen, which can trigger premature reproductive development in young girls and possibly lead to uterine tumors.

Low-income women of color are also more likely to live in an area with high levels of <a href="https://www.earth.com/news/melting-snow-toxic/">pollutants</a> that contaminate the air, soil, and water. So they are not only more likely to be exposed to more toxic chemicals on their skin and hair, but in their environment as well. 

“For women who live in already polluted neighborhoods, beauty product chemicals may add to their overall burden of exposures to toxic chemicals,” says Bhavna Shamasunder, an assistant professor at <a href="https://www.oxy.edu/">Occidental College</a>. “Certain racial/ethnic groups may be systematically and disproportionately exposed to chemicals in beauty products since factors such as institutionalized racism can influence product use.”

All of these increased risks can add up to become detrimental in healthy reproduction and development. The authors’ commentary suggests that health professionals can aid these at-risk groups by counseling their patients on the detriments of exposure to hidden chemicals in beauty products.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Women of color more at risk of health hazards of beauty products

New research published in the American Journal of Obstetrics and...

Flexible work hours may sound like an ideal arrangement, but the trend is posing a massive problem for workers in the UK. New research finds that flexible hours and zero hour contracts impose a serious strain on employees contracted in those positions. 

A zero hour contract means that the employer is under no obligation to provide any minimum number of hours, and the hours available may be presented on a short term basis.

Flexible working hours, however, involve contracts with minimal hours that are not always set and can change at the discretion of management, sometimes with very short notice. 

According to a new study from the universities of <a href="https://www.cam.ac.uk/">Cambridge</a> and <a href="http://www.ox.ac.uk/">Oxford</a>, flexible working hours affect 4.6 million people in the UK. These types of contracts are particularly popular among retail and care home workers.

While it might be assumed that zero hour contracts would be more detrimental, according to researchers they are just the “tip of the iceberg.”

Because flexible working hours means no stability, those employees who have rigid commitments like childcare were found to be most adversely affected, often resorting to toxic employer-employee relationships. 

"Manager-controlled flexible scheduling causes a huge amount of stress and anxiety for workers who are unable to plan their lives socially or financially as a result," said Dr. Brendan Burchell from Cambridge's Department of Sociology and co-author of the study, along with Dr. Alex Wood from Oxford.

Wood worked as a shelf stacker at a UK supermarket and used his experiences, combined with data collected from European Working Conditions Surveys, to conduct the study. 

The findings showed that these precarious scheduling practices can be very damaging to self-esteem and <a href="https://www.earth.com/news/climate-change-mental-health-issues/">mental health</a>, and can force employees into unstable situations where they have to beg for hours that have no guarantee. 

This research will hopefully help pave the way for finding ways target these unhealthy scheduling practices and help create more sustainable working environments for the employees most affected.

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Flexible work hours found to be brutal for workers

Flexible work hours may sound like an ideal arrangement, but...

For some time, it has been understood that different behavioral traits between genders are linked to the brain and inherited genetics. But new research has revealed that gender behavioral traits can also be adapted from social environments and passed down through generations. 

The findings show a shift that differs from the currently accepted models that traits are inherited genetically. 

The study, performed by researchers at <a href="http://www.unimelb.edu.au/">University of Melbourne</a>, the <a href="http://www.exeter.ac.uk/">University of Exeter</a>, and <a href="https://english.tau.ac.il/">Tel-Aviv University</a>, was published in the journal Trends in Cognitive Sciences.

These adapted gender traits can be learned through culture or social context and then passed down through generations. So multi-generational behavioral traits might be explained more aptly through inherited socio-environmental conditions rather than genetic makeup. 

“Even in non-human mammals, adaptive traits that have reliably developed in offspring for thousands of years can disappear within a few generations, if the relevant environmental conditions change,” said John Dupré, a professor from the University of Exeter. 

Cultural norms are a huge part of how we adapt to our environment, and pre-existing, societal <a href="https://www.earth.com/news/eyes-important-feature/">gender</a> norms have been a pervasive part of our culture. The researchers discuss how this might contribute to how we are hardwired to adapt to and inherit socio-environmental conditions rather than through genetics alone. 

“Masculine and feminine behaviors cannot be explained by the existence of male and female brains, as has previously been suggested. Our research suggests that intergenerational inheritance of gender-specific traits may better be explained by highly stable features of the social environment,” said professor Daphna Joel from Tel-Aviv University. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Gender behavior can be inherited through social environment

For some time, it has been understood that different behavioral...

With the Trump administration promising to increase deportation efforts, immigrant detention centers will house an increasing number of detainees. But disturbing new research reveals that the conditions in these immigration detention centers are similar to that of a prison and are anything but family-friendly.

According to a new study conducted by researchers from the <a href="https://www.ku.edu/">University of Kansas</a>, detained immigrants are treated like criminals even though immigration violations are a civil offense. Lawyers who had experienced the detention centers themselves were interviewed for the study.

Those interviewed said that the women who are held at the centers with their children must wear orange jumpsuits. The doors are monitored by guards, there are thick concrete walls, floodlights, and sometimes several families are all placed in one room.

“What immigrants go through in the immigration enforcement system amounts to forms of punishment that are only handed down in criminal cases,” said Cecilia Menjívar, a professor of sociology at the University of Kansas. 

The study also covers the strange contrast between the reality of the conditions in immigration detention centers and the language the government uses when discussing them. 

Even though the centers are tantamount to prisons and detainees and their <a href="https://www.earth.com/news/oxytocin-improves-autistic-children/">children</a> are treated like criminals, the language used to talk about the centers is much softer. 

“Officials refer for instance to the centers as family centers or they want the centers to be certified as child care centers. The language used is very neutral, even child- and family-friendly, as if it's just a holding place, but in fact, that's not the case at all,” said Menjívar.

Menjívar also explains in the study that these detention centers are just another way to incarcerate and remove people of color from society. 

“We have very high levels of the African Americans population placed in prisons, and we also have immigrants, mostly Latinos, who are put in detention centers that really function as prisons. So, both populations end up removed from society through imprisonment. The more immigrants are criminalized through law, the more they are going to end up in this type of incarceration,” said Menjívar 

The misleading government language does an injustice to the many immigrants who are put in those conditions and whose experiences are not part of the narrative.

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Report: Immigration family detention centers are like prisons

With the Trump administration promising to increase deportation efforts, immigrant...

Environmentalists trying to implement greener community farming practices sometimes face tension and obstacles due to differing opinions on how much conservation should be prioritized. 

First-time farmers and traditional family farmers may disagree on everything from the best sustainable practices to religious ideologies, and bridging the gap between these two types of farmers might seem like an impossible task.

But research led by Ruth Stamper, a doctoral candidate from the <a href="https://www.ku.edu/">University of Kansas</a>, shows promising tactics that could help mediate this divide, produce sustainable local agriculture, and foster stronger community engagement. 

Stamper talked to farmers in Missouri and Kansas about working to create sustainable local agriculture and found it be a powerful meditative tool within the farming community. 

The farmers she spoke to voiced a common goal of wanting to create or enhance sustainable local food systems and this helped bring together <a href="https://www.earth.com/news/severe-drought-plagues-north-dakota/">farmers</a> with differing views.

“They were coming together to build these local food networks, to educate and produce consumers for their products. They shared practices and how they were educating themselves, creating this space where they are building relationships that haven't necessarily developed before,” said Stamper. 

Religious differences were found to be one of the biggest dividers within local farming communities, as long time family farmers were surveyed as holding conservative Christian values and seemingly leery of neighboring farmers who presented themselves as progressive environmentalists or members of the LGBT community. 

"The local farmers all have the same kind of end goal in mind, even though they were coming from two different ideologies," said Stamper. 

Because local community efforts to produce sustainable agricultural practices are an important part of combating climate change, finding ways to bridge ideological disparities will be key in creating greener communities. 

--

By<a href="mailto:kayvandette@gmail.com"> Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com </a>Staff Writer

Local food systems bridge the political divide, help conservation

Environmentalists trying to implement greener community farming practices sometimes face...

Climate skeptics are often considered either incapable or unwilling to grasp the reality of climate change. But now, an ongoing study is providing other explanations for why some people still deny climate change.

Jacob Lipsman is a <a href="https://www.ku.edu/">University of Kansas</a> doctoral student in Sociology. His research is exposing economic, social, and cultural influences that may cause communities and individuals to deny <a href="https://www.earth.com/news/report-reveals-climate-change-us/">climate change</a>.

"The most obvious example of this is the instance of an individual who works for an industry, such as in oil and gas production, that may be negatively impacted by regulatory policy," said Lipsman. "This also functions on the community level; for instance, in Southeast Louisiana, oil and gas represents a disproportionate source of revenue for coastal parishes."

Climate change has already had an undeniable impact on Louisiana. The state has lost over 1,800 square miles of land to coastal erosion, an area equivalent to the size of Delaware.

"This land loss has major impacts on communities both directly in terms of increased flood vulnerability and indirectly through potentially decreased economic productivity," said Lipsman.

Lipsman investigated Plaquemines and St. Bernard, two Louisiana parishes adjacent to the mouth of the Mississippi River. He surveyed residents to understand their views on environmental threats. Lipsman examined any links between these perspectives and local actions taken to address coastal restoration issues in the region.

So far, the study has revealed that residents of the parishes have exceptional environmental awareness despite widespread disbelief of climate change. For example, Louisiana's Comprehensive Master Plan for a Sustainable Coast is getting major local support in Southeast Louisiana. This $50 billion dollar plan will encompass hydrologic restoration and shoreline protection, among other projects.

Lipsman will present early findings of his research today at the annual meeting of the <a href="http://www.asanet.org/">American Sociological Association</a> in Montreal. He believes this study could help bridge the gap between climate change believers and non-believers. 

"If an individual or a community is resistant to the idea of climate change for economic or social reasons, climate advocates will not be able to effectively communicate with these individuals about climate change simply by presenting more data," explained Lipsman. "By better understanding the processes of climate change denial, climate advocates will be better equipped to have an effective dialogue with individuals and communities that are skeptical of these ideas."

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Getting through to those who still deny climate change

Climate skeptics are often considered either incapable or unwilling to...

Currently in the United States, medical marijuana is legal in 28 states and the District of Columbia. About 80 percent of individuals who use medical cannabis do so for pain management. Although medical marijuana use has been increasing across the nation, there is actually little comprehensive information surrounding the benefits and harms of using it for chronic pain treatment.

At this point, scientific evidence is too lacking for there to be any consensus on the safety and effectiveness of cannabis for chronic pain or post traumatic stress disorder (PTSD). Recently two systematic evidence reviews from the U.S. Department of Veteran Affairs (VA) were published in <a href="http://annals.org/aim">Annals of Internal Medicine</a>.

Researchers reviewed 27 chronic pain trials to assess the benefits and harms of cannabis and cannabinoid products for treating chronic pain in adults. Ultimately, they found low-strength evidence that cannabis helps treat neuropathic pain, and no significant evidence to make any conclusions about medical marijuana’s effectiveness in treating other forms of pain.

The review also found that marijuana use in the general public may lead to increased risk for certain harms, including motor vehicle accidents, psychotic symptoms, and short-term cognitive impairment. 

In states with legal medical marijuana, roughly one-third of patients use cannabis for PTSD symptoms. Despite this, there has been little scientific evidence to support that cannabis assists in treating PTSD and doesn’t cause any harm.

In their review, researchers found insufficient evidence to form any conclusions on the efficacy of cannabis in the patient population studied. However, one of the largest observational studies of veterans with PTSD found minor but significant worsening of symptoms in patients who continued or started cannabis use when compared to patients who had never used or stopped using cannabis during the study.

In an accompanying editorial from <a href="https://www.vanderbilthealth.com/psychiatrichospital/">Vanderbilt Psychiatric Hospital</a>, the author states that these findings are very similar to the findings of other respected organizations, which suggests a growing consensus in the field. In the end, there is little high-quality evidence available to form any conclusions about the efficacy of <a href="https://www.earth.com/news/cannabis-treats-migraines-better/">cannabis</a> in treating pain and PTSD. 

Despite what has been found – or not found – in research, it is unlikely that states will revoke the legal status of medical cannabis. Instead, it should fall upon physicians to study the available research and be able to make educated decisions for their individual patients.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Cannabis treatment for chronic pain, PTSD still lacking evidence

Currently in the United States, medical marijuana is legal in...

Emissions from cars, factories, and cigarettes have been shown to cause many adverse health effects, including causing respiratory problems, cardiovascular disease, and metabolic issues. Residents of areas with high concentrations of pollution, like in urban China, are more susceptible to the impacts of air pollution than in other parts of the world and are working to find ways to lessen the effect.

A recent study looked at increased exposure to air pollution and its impact on health and found that air purifiers successfully reduced the negative effects caused by pollutants. 

A team of researchers from the <a href="http://www.fudan.edu.cn/en/">Fudan University in Shanghai</a>, China examined 55 college students and found that high levels of air pollution created and exacerbated cardiovascular and metabolic issues in otherwise healthy young people.

The researchers also wanted to study the impacts that air purifiers had on the test subjects and gave them alternative treatments of sham and real air purification systems in their dorm rooms. 

“Levels of stress hormones, systolic blood pressure, and biomarkers of oxidative stress and inflammation were significantly lower when using real air purifiers,” Haidong Kan, lead author and Professor of Environmental Health Sciences at Fudan said. 

The research, which was published in the American Heart Association's journal Circulation, tested blood serum and urine as the individuals were exposed to increasing levels of fine particulate matter found in vehicle <a href="https://www.earth.com/news/rising-co2-emissions-mean-protein-deficiency-millions/">emissions</a>. The results found increasing levels of stress hormones and notable changes in blood serum metabolites after exposure to the pollution. 

Because previous studies have suggested that fine particulate matter could adversely impact metabolic functions, this study used metabolomics, a method that determines how our body metabolizes glucose and amino acids. 

The study also found that real air purifiers were effective methods of reducing the negative impacts of the increased exposure to PM2.5. 

The study was fairly limited, but was the first to tackle the exact link between air pollution and cardiovascular health. Further studies will need to be completed using this research on a larger, global scale to help confirm just how air purifiers can help reduce the harmful effects of air pollution. 

---

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Air pollution causes cardiovascular disease, but purifiers help

Emissions from cars, factories, and cigarettes have been shown to...

A report published today in the <a href="http://www.onlinejacc.org/">Journal of the American College of Cardiology</a> reveals that light to moderate drinking can lower the risk of mortality from cardiovascular disease and all causes. Heavy drinking, on the other hand, can significantly increase the risk of mortality from cancer and all causes. 

Despite the fact that high <a href="https://www.earth.com/news/alcohol-abuse-united-states/">alcohol</a> consumption has been linked to a large amount of health issues including cardiovascular disease, moderate alcohol consumption is widely recommended. For this study, the experts analyzed the link between alcohol consumption and risk of mortality from all causes, cancer, and cardiovascular disease in the United States. 

The researchers examined data obtained through the <a href="https://www.cdc.gov/nchs/nhis/index.htm">National Health Interview Surveys</a> from 1997 to 2009. Over 333,000 participants were surveyed regarding their alcohol consumption levels and patterns. 

Alcohol consumption patterns were divided into categories including lifetime abstainers, lifetime infrequent drinkers, former drinkers, and current drinkers. The current drinkers were classified as light, moderate, or heavy drinkers. 

Light drinking is constituted by less than three drinks per week. Moderate drinking is

3-14 drinks per week for men and 3-7 drinks per week for women. Heavy drinking is over 14 drinks per week for men or over seven drinks per week for women.

Bo Xi, M.D., is an associate professor at the <a href="http://www.at0086.com/shdu/college.aspx?c=1026">Shandong University School of Public Health</a> and the lead author of the study.

"Our research shows that light-to-moderate drinking might have some protective effects against cardiovascular disease, while heavy drinking can lead to death. A delicate balance exists between the beneficial and detrimental effects of alcohol consumption, which should be stressed to consumers and patients," said Xi.

Over the course of the study, 34,754 participants died from all causes. 8,947 of these mortalities were cardiovascular disease-related and 8,427 mortalities were cancer-related.

The researchers found that heavy drinking in males increased the risk of mortality due to all causes by 25 percent and led to a 67 percent higher risk of death from cancer. These increases were not significantly noticed in women, and there was no association found between heavy drinking and cardiovascular disease mortality. 

Moderate drinking decreased the risk of all-cause mortality by up to 25 percent, and resulted in up to 34 percent less deaths from cardiovascular disease in both men and women. Light drinking had similar results. 

Study co-author Giovanni de Gaetano said that although younger adults should not expect considerable benefit from moderate drinking, "for most older persons, the overall benefits of light drinking, especially the reduced cardiovascular disease risk, clearly outweigh possible cancer risk."

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Bottoms up! Moderate drinking has considerable health benefits

A report published today in the Journal of the American...

It seems intuitive at this point to say that <a href="https://www.earth.com/news/trick-heart-thinking-exercise/">exercise</a> is good for you. Vast volumes of research and personal testimonies generally show that exercise leads to benefits such as improved physical fitness (obviously), heart health, and even mental clarity. 

Now, recent research published in the journal <a href="http://www.eneuro.org/">eNeuro</a> finds that exercise improves memory later in life and increases the amount of neuron activity generated in adulthood. The study was performed on rats, but if this is also true for humans, it raises the possibility that exercise early in life may help protect against age-related cognitive decline later.

Researcher Martin Wojtowicz and his team provided a group of young rats with access to a running wheel, while others were in standard cages with no wheel. Beginning at one month of age, the results showed that six weeks of voluntary running was enough to induce a long-term effect on learning and memory of a fear response. This fear response is known to depend on newly generated neurons in the hippocampus in adulthood – exactly what the researchers were testing for.

Furthermore, the researchers found that the activity of adult-born neurons was increased compared to both neurons acquired during development and those of rats in cages with no running wheels. 

These findings support the idea of cognitive reserve, which postulates that the brain uses enriching experiences from youth to compensate for functional declines that occur as a result of age or disease. It’s possible that exercise in early life may help build up this cognitive reserve, helping to delay the crippling symptoms of neurodegenerative disorders such as Alzheimer’s disease. If this is true for humans as well, putting added emphasis on exercise during youth may one day benefit us in our old age.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Exercise during youth helps memory in the long run

It seems intuitive at this point to say that exercise...

A recent study used smartphones to monitor the activity spaces of youths between the ages of 11 and 17. GPS data revealed that kids spend less time in their neighborhoods if they live in an area where residents are fearful of crime. 

Researchers from <a href="https://www.osu.edu/">Ohio State University</a> tracked over 1400 youths living in 184 neighborhoods in Franklin County, Ohio, as part of the <a href="https://sociology.osu.edu/browning-adolescent-health-and-development-context">Adolescent Health and Development in Context</a> study. Kids were given smartphones to carry with them for a week, and the devices reported their location every 30 seconds. 

The researchers found that the adolescents spent an average of one less hour per day in neighborhoods perceived as unsafe compared to kids from neighborhoods thought to be safe. In high-poverty neighborhoods, there was a higher fear of <a href="https://www.earth.com/news/international-criminal-court-will-now-focus-environmental-crimes/">crime</a>. 

Christopher Browning is a professor of Sociology and the lead author of the study.

"It is clear that kids who live in high-poverty areas are spending less time in their neighborhoods and that is linked to a collective fear of crime," said Browning.
"This has never been tested before with GPS data that tracks movements on a minute-by-minute basis."

The study showed that the children spent around 52 percent of their waking hours at home, 13 percent in their neighborhoods, and 35 percent outside of their neighborhoods overall.

The caregivers of the adolescents were asked to rate how fearful they were to walk in their neighborhoods. The caregivers’ ratings showed no significant connection to how much time their kids spent close to home. However, the combined fear ratings of all the caregivers who spent time in a particular area strongly corresponded to the amount of time kids spent in that neighborhood.

"Once enough people stop spending time in a neighborhood because they are afraid, others will withdraw, whether they are afraid or not," explained Browning.

The study explored other reasons why youths in high-poverty neighborhoods spent less time there, such as a lack of schools or community centers. The collective fear of crime was found to be the most likely explanation. 

"Many cities have social services like recreation centers that are targeted for disadvantaged neighborhoods," said Browning. "But our results suggest these amenities may be underutilized because young people are withdrawing from the neighborhood. Whether they are afraid to go there or just following their friends elsewhere, young people spend less time in disadvantaged neighborhoods."

The research will be presented by Professor Browning today in Montreal at the annual meeting of the <a href="http://www.asanet.org/">American Sociological Association</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

Fear affects where kids spend their time

A recent study used smartphones to monitor the activity spaces...

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



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



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



Video/ Image Credit: ESA



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

Nushagak Bay in southwest Alaska

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



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



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



Video/ Image Credit: American Chemical Society&nbsp;



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



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Flu viruses are more flexible than expected

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



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



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



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



Video/Image Credit: ESA&nbsp;



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

Lake Trasimeno in Central Italy

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



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



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



Video Credit: American Chemical Society&nbsp;



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



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Detecting mercury contamination with the tap of a finger

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



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



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



Video Credit: ACS Reactions



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



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

How does salt makes things taste better?

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



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



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



Video/ Image Credit: ESA



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



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

Santiago, Chile in South America

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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

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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



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Tiger sharks are shifting poleward as temperatures rise

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

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



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



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



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



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



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



Video Credit: ESA&nbsp;



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



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

Melt ponds on the Greenland Ice Sheet

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



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



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



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



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



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



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



Video Credit: ESA



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



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

The history of Mars is much more complex than we thought

[sendtonews key="qas3EhyI0Y-2220951-12187" type="single"] Today’s Video of the Day from the...

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



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



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



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



Video Credit: Stowers Institute for Medical Research



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



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

Cavefish are healthy despite their sedentary lifestyle

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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

[sendtonews key="MHyhtebibJ-2200368-12187" type="single"] Today’s Video of the Day from NASA...

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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...