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,...

High blood pressure is widespread and impacts about one billion people across the globe. The condition increases the risk of <a href="https://www.earth.com/news/breakfast-prevent-cardiovascular-disease/">cardiovascular disease</a>, which is the leading cause of death worldwide. 

It’s been proven that dairy consumption has a positive impact on heart health and has been associated with beneficial effects on high blood pressure, type 2 diabetes, and insulin resistance. 

Now, a new study found that eating yogurt specifically could reduce the risk of cardiovascular disease in people with high blood pressure. 

A team of researchers who specialize in nutritional science and epidemiology conducted the study, which was published in the American Journal of Hypertension. 

The results showed that consuming yogurt was linked to a lower risk of cardiovascular disease among men and women with hypertension. 

For the study, the team collected and analyzed data from two previous studies, the <a href="http://www.nurseshealthstudy.org/">Nurses’ Health Study</a> and the<a href="https://sites.sph.harvard.edu/hpfs/"> Health Professionals Follow-Up Study</a>. 

The Nurses’ Study included 55,000 women ages 30 to 55 with high blood pressure, while the Health Professionals Study included 18,000 men ages 40 to 75.

The Nurses’ Health Study had participants fill out a 61 item questionnaire that included questions about dietary intake and any diagnosed heart issues such as myocardial infarction, stroke, and revascularization.

In the two studies, there were 5,448 reported cases of cardiovascular disease among the participants. 

After analyzing the data, the researchers found a link between eating yogurt and a reduced risk of cardiovascular disease.

Among the Nurses’ Health participants, a high consumption of yogurt correlated with a 30 percent reduction in risk of heart attack for women and a 19 percent lower risk in men in the Health Professional study. 

The results showed that in both men and women with high blood pressure, eating two or more servings of yogurt a week was linked to a 20 percent lower risk of heart disease 

“We hypothesized that long-term yogurt intake might reduce the risk of cardiovascular problems since some previous small studies had shown beneficial effects of fermented dairy products,”  said Justin Buendia, the study’s lead author. “Our results provide important new evidence that yogurt may benefit heart health alone or as a consistent part of a diet rich in fiber-rich fruits, vegetables, and whole grains.” 

--

By<a href="mailto:kayvandette@gmail.com"> Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Eating yogurt is good for your heart

High blood pressure is widespread and impacts about one billion...

<a href="https://www.earth.com/news/self-driving-cars-sensors/">Autonomous vehicles</a> are quickly becoming more of a reality in the developed world, as some major companies have already put hundreds of vehicles on the road. This new technology could eventually save you the trouble of driving yourself everywhere, but could it also save the environment?

A new study published in the journal <a href="https://pubs.acs.org/journal/esthag">Environmental Science &amp; Technology</a> has found that the added weight, electricity demand, and aerodynamic drag of the sensors and computers used in these vehicles are major contributors to their lifetime energy use and greenhouse gas emissions. 

However, when savings from the driving efficiencies of autonomous vehicles are factored into these calculations, the net result is a reduction in lifetime energy use and greenhouse gas emissions of as much as 9 percent compared to conventional vehicles. 

“This study explored the tradeoffs between the increased environmental impacts from adding autonomous vehicle equipment with the expected gains in driving efficiency,” explains Gregory Keoleian, director of the Center for Sustainable Systems at the <a href="https://www.umich.edu/">University of Michigan</a> School for Environment and Sustainability, and co-author on the study.

In the study, the researchers assess the lifetime contributions of the sensing and computing subsystems in autonomous vehicles to energy use and greenhouse gas emissions. Autonomous vehicles – formally known as connected and automated vehicles (CAVs) – usually include multiple cameras, radar, sonar, LiDAR, a GPS navigation system, a computer, and support structures.

The vehicles the researchers analyzed for the study are Level 4 CAVs, which are vehicles that can operate without human input or oversight under select conditions. They assessed two types of CAVs: those powered by internal combustion engines and battery-powered electric vehicles. The two vehicle types were paired with sensing and computer subsystems of three sizes (small, medium, and large) to create six scenarios. To estimate lifetime energy use and greenhouse gas emissions for each scenario, they utilized life-cycle assessment methodology.

The results showed that autonomous vehicles with electric powertrains have 40 percent lower lifetime greenhouse gas emissions than vehicles powered by internal-combustion engines. “We’ve shown in this paper that a battery-electric vehicle is a better platform for CAV components compared to the internal-combustion engine vehicle in terms of minimizing environmental impacts,” says study lead author Jim Gawron, a graduate student at the U-M School for Environment and Sustainability and at the Ross School of Business.

Their findings also showed that the sensing and computing subsystems in CAVs could increase a vehicle’s energy use and greenhouse gas emissions by between 3 and 20 percent, as a result of increases in power consumption, weight, and aerodynamic drag. This includes the added weight and power demand of the onboard computer – roughly 45 percent of the weight and 80 percent of the power – and the drag caused by exterior-mounted CAV components. Luckily, the operational benefits of these vehicles are expected to outweigh these increases in the majority of cases. 

However, the conclusions of this study are based on the assumption that the operational efficiencies of CAVs can result in a 14 percent reduction in fuel consumption over conventional vehicles. But if the reduction ends up being significantly lower than 14 percent, the environmental benefits could disappear.

“Our findings highlight the need to focus on energy efficiency when designing autonomous vehicles so that the full environmental benefits of this emerging, transformative technology can be realized,” says Keoleian. “We hope this work contributes to a more sustainable mobility ecosystem.”

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Autonomous vehicles would have environmental benefits

Autonomous vehicles are quickly becoming more of a reality in...

Experts at <a href="https://www.fiu.edu/">Florida International University</a> are reporting that having an intelligent best friend in middle school can boost our intelligence later in life. The researchers say this is likely due to the fact that we absorb the knowledge and skills of our closest peers.

“Decades of research has revealed clear associations between indicators of intelligence and a host of important outcomes,” wrote the study authors. “Thus, it is not surprising that a multitude of studies have attempted to elucidate the factors that contribute to the development of, and individual variation in, intelligence.”

“The current study sought to contribute to this body of research by exploring a relatively novel potential influence on intelligence: peers.”

The research was based on data from hundreds of participants across the country, including “target children” who had taken intelligence tests at age 10 and then again at age 15. The target children were linked with the test scores of their best friends, who had completed intelligence tests between the ages of 11 and 12.

The study revealed that intelligence among the target children at age 15 strongly corresponded with the <a href="https://www.earth.com/news/self-control-tied-intelligence/">intelligence</a> levels of their best friends at age 11. 

The researchers said that these findings indicate that we not only seek out friends who have a similar IQ to our own, but that the intellect of our closest peers directly influences our own intellectual capacity.

“Overall, our results provide support for the hypothesis that having more intelligent friends is associated with higher future levels of intelligence,” wrote the researchers. “Our findings add … another layer of evidence for the important and pervasive influence of peers on a host of traits during adolescence.”

The <a href="https://psyarxiv.com/tvj9z">study</a> was led by Dr. Ryan Meldrum.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Our childhood friends can actually make us smarter

Experts at Florida International University are reporting that having an...

A commonly cited story about how rabbits became domesticated has been found to be untrue. Instead, a new study published in the journal Trends in Ecology and Evolution suggests that the <a href="https://www.earth.com/news/cats-domesticated-10000-years/">domestication</a> of rabbits had no exact origin but happened over a broad period of time.   

The research also has wide implications as it shows how domestication was an ongoing process, and trying pinpoint a single origin in time when an animal was domesticated is not possible. 

Previously, information about the domestication of rabbits was based on the story that says in 600 A.D. Pope Gregory declared that eating fetal rabbits was acceptable during lent and so monks began domesticating the first rabbits. 

However, archeologists from the <a href="http://www.ox.ac.uk/">University of Oxford</a> found this wasn’t the case at all, as there is evidence of domesticated rabbits dating back as far as the last ice age.

Researchers Evan Irving-Pease and Greger Larson were testing a method for genetically dating domestication using the molecular clock. 

By comparing the genomes of a domestic animal and a wild one, the molecular clock would show when in time the two converged, which would be when the animal was first domesticated. 

Irving-Pease and Larson tried this method on rabbits, thinking that it would prove that genomes of rabbits diverged in 600 A.D. matching the popular story. Instead, the molecular clock method showed that rabbits were domesticated much earlier, even before domestication existed. 

Their findings complicate the matter of domestication and disprove the theory that rabbits were first domesticated by monks. 

“I had cited it, colleagues of mine had cited it, it's all over Wikipedia, it's all over the web... but it turns out that the modern story is a complete house of cards,” said Larson. “What was really interesting to me then was why nobody's really thought about it or been critical about it.” 

Larson and his colleagues instead suggest that rabbit domestication happened over a long period of time beginning in the paleolithic era. They were hunted and kept in cages, then moved around and eventually bred as pets. 

Trying to pinpoint domestication is an impossible feat for many animals because as the researchers say there’s no “eureka” moment.

“We have been slightly arrogant,” said Irving-Pease. “We know a hell of a lot less about the origins of the things that matter most to us than we think we do.”

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Rabbits have been domesticated much longer than most thought

A commonly cited story about how rabbits became domesticated has...

What determines an individual’s personality? While psychologists have worked to understand this complex component of the human experience, there have been many controversies and contradicting information about how personalities develop. 

But now, a new theory has been published by Carol Dweck, Ph.D., Professor of Psychology at Stanford University and one of the world’s leading researchers in the field of motivation.

Dweck suggests that personality is based on basic needs and fulfillment. Her work combines motivation, personality, and development in one framework. 

Published in the journal Psychological Review, the findings revolve around the idea that as people try and meet their needs and create goals and beliefs around their experiences, this is how personality is formed and developed. 

According to Dweck, we all have basic psychological needs that must be met. These are the need to predict our world, the need to build competence to act on our world, and the need for acceptance from others. 

As an example of these basic needs being met, <a href="https://www.earth.com/news/eggs-high-iq-babies/">infants</a> are constantly on the lookout for need-relevant information and working to fulfill them. Learning as they go, their experiences begin to shape their beliefs about the world and their ability to act in that world. These beliefs are termed “BEATs.” 

Dweck defines BEATs as all the experiences a person has while trying to meet their needs. BEATs are an important factor in personality, both with goal orientation and inner beliefs about need fulfillment. 

A person’s BEATs help shape personality because they can determine how someone goes about meeting their needs and goals, in other words, motivations.

Dweck’s theory is noteworthy because it shows how personality is developed by motivations instead of the idea that personality is genetic and we’re born with certain personality traits. 

Personality is shaped as our beliefs and experiences evolve.  The research also provides insight into growth and development and the personality processes that can help shape well-being

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

What determines how our personalities develop?

What determines an individual’s personality? While psychologists have worked to...

A new study found the optimal income for life satisfaction was $95,000, suggesting that money can buy happiness but only up to a certain amount. 

“That might be surprising as what we see on TV and what advertisers tell us we need would indicate that there is no ceiling when it comes to how much money is needed for happiness, but we now see there are some thresholds,” said Andrew T. Jebb, the lead author of the study. 

Researchers from <a href="http://www.purdue.edu/">Purdue University</a> examined wealth and satisfaction across different regions around the world to measure if money is a major factor in happiness, satisfaction, and well-being. 

Their findings were published in the journal Nature Human Behaviour.

Money can buy basic needs which are important to one’s sense of well-being and health, but the Purdue study questioned if there was a cap on how much happiness money could buy. 

Does satisfaction and <a href="https://www.earth.com/news/difficult-times-important-happiness/">happiness</a> increase the more money you have, or is there a point when money can actually cause emotional strain?

To answer this question, the researchers collected data from the Gallup World Poll, a survey of more than 1.7 million people across 164 countries. 

Income and happiness were calculated using the purchasing power of individuals in the survey and their reported satisfaction and well-being in relation to that income. 

The results showed that money did impact satisfaction and emotional well-being but only to a point. 

“It's been debated at what point does money no longer change your level of well-being,” said Jebb. “We found that the ideal income point is $95,000 for life evaluation and $60,000 to $75,000 for emotional well-being.” 

If income was higher than the researchers’ calculations, people reported a reduced level of satisfaction and lower self-worth. 

The study hypothesizes that this is because money can buy basic needs and conveniences that impact happiness, but income levels above that add stress to the earner and they may feel pressured to compare themselves to other higher earners or pursue more wealth. 

“At this point, they are asking themselves, 'Overall, how am I doing?' and 'How do I compare to other people?'” Jebb said. “The small decline puts one's level of well-being closer to individuals who make slightly lower incomes, perhaps due to the costs that come with the highest incomes.” 

Jebb and his colleagues note that their findings could be significant for future research examining the relationship between money and happiness and its limits across different regions, cultures, and individuals. 

---

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

There is a limit to the happiness that money can buy, study finds

A new study found the optimal income for life satisfaction...

The <a href="https://ec.europa.eu/jrc/en">European Commission Joint Research Centre</a> (JRC) has launched the largest <a href="https://www.earth.com/news/quality-life-megacities-trees/">urban</a> database ever created. The comprehensive new tool was developed to hold information on 10,000 cities all over the world.

The JRC's Global Human Settlement Layer (GHSL) is a framework to produce information on the population size of settlements. Based on data derived from the GHSL, the researchers concluded that the planet has become more urbanized than they previously realized.

The experts found that urban populations in Africa doubled between 1990 and 2015, while urban populations in Asia grew by 1.1 billion in the same time frame. They also discovered that over 400 cities have a population between 1 and 5 million, more than 40 cities have 5 to 10 million people, and 32 cities have over 10 million residents.

Furthermore, the researchers determined that air pollution in urban areas was decreasing between 2000 and 2015, and cities became 25 percent greener in those years.

Environmental factors tracked by the tool include the estimated “greenness” of a city, air pollution levels, disaster-risk related exposure, and the distance from a city to the closest natural protected areas. The data is available to anyone free of charge, and will provide support to monitor global urbanization and the 2030 Sustainable Development Agenda.

The information gained from the GHSL is used to map out population density and settlement models. Satellite data and local geographic information are used to create the maps.

The city centres database will be revealed for the first time at the 9th annual World Urban Forum in Kuala Lumpur. At the event, the JRC will provide training on how to monitor urban development using the GHSL database. 
--
By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

City database reveals Earth has become increasingly urbanized

The European Commission Joint Research Centre (JRC) has launched the...

Experts at the <a href="https://www.colorado.edu/">University of Colorado Boulder</a> are reporting that alcohol causes more damage to the brain than marijuana. Alcohol use was linked to structural changes in brain matter, while marijuana use was not linked to long-term mental consequences.

Marijuana is being legalized for both medicinal and recreational use in states across America, and researchers are working to learn more about its potential health benefits as well as any harmful impacts that may be caused by the drug.

The CU Boulder team set out to examine how <a href="https://www.earth.com/news/marijuana-battle-opioid-crisis/">marijuana</a> affects the brain. The experts analyzed MRI scans from over 1,200 participants between the ages of 14 and 55 after determining patterns of alcohol and cannabis use among the individuals.

The study revealed that marijuana does not significantly affect grey or white matter in the brain. Alcohol use, on the other hand, was found to reduce the size of grey matter and the integrity of white matter - particularly in adults who had used alcohol for many years.

Grey matter enables brain function such as speech, muscle control, decision making, and memory, while white matter connects areas of grey matter together. The researchers explained that any reduction in the size or integrity of brain matter can lead to impairments in brain functioning.

“With alcohol, we've known it's bad for the brain for decades,” said study co-author Kent Hutchison. “But for cannabis, we know so little.”

Hutchison pointed out that the results of previous studies on how marijuana affects the brain are inconsistent.

“When you look at the research much more closely, you see that a lot of it is probably not accurate,” said Hutchison.

“When you look at these studies going back years, you see that one study will report that marijuana use is related to a reduction in the volume of the hippocampus. The next study then comes around, and they say that marijuana use is related to changes in the cerebellum...The point is that there's no consistency across all of these studies in terms of the actual brain structures.”

Based on the findings of the current study, the researchers believe that alcohol consumption is much more harmful to brain health than marijuana use.

“While marijuana may also have some negative consequences, it definitely is nowhere near the negative consequences of alcohol,” said Hutchison.

The study is published in the journal <a href="https://www.psychologytoday.com/basics/addiction">Addiction</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Marijuana is much less damaging to the brain than alcohol

Experts at the University of Colorado Boulder are reporting that...

The idea of “yo-yo dieting” refers to weight fluctuations that typically follow a period of dieting. A person may successfully lose <a href="https://www.earth.com/news/standing-lose-weight/">weight</a> on a diet but then gain, or yo-yo, back to their pre-diet weight. 

The reason for this gain is simple, when we diet our bodies burn more fat in order to provide enough energy. During this period, the brain is in famine mode trying to conserve energy. When the diet is over, the body goes back to storing fat as normal and tries to make up for the lost calories. 

Besides seeming like a waste of time and energy, yo-yo dieting can also be harmful to your health. <a href="http://www.nejm.org/doi/full/10.1056/NEJMoa1606148">One study</a> found in that patients diagnosed with coronary artery disease, weight fluctuations doubled their risk of mortality. 

But now, researchers from the <a href="https://www.monash.edu/discovery-institute">Monash Biomedicine Discovery Institute</a> have discovered a molecular switch in the brain that regulates fat burning. Their findings could help control post-diet weight gain and provide treatments for metabolic disorders and obesity. 

The study, published in the journal Cell Reports, identified a protein called carnitine acetyltransferase (Crat) in mice that regulates the body’s fat storage after a famine or diet. 

The researchers then modified a group of mice to have this fat storage protein genetically switched off, and after a diet, they continued to burn fat. Post-diet, the mice with the protein switched off burned through fat reserves at a greater than average rate. 

The results show that it may be possible to regulate fat storage after a diet in humans by “tricking” the brain to stay out of famine mode. 

“Manipulating this protein offers the opportunity to trick the brain and not replace the lost weight through increased appetite and storage of fat,” said Zane Andrews, an Associate Professor and member of the research team. “By regulating this protein, we can ensure that diet-induced weight loss stays off rather than sneaking back on.

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>,<a href="https://www.earth.com/"> Earth.com</a> Staff Writer

Scientists identify brain switch that could control weight gain

The idea of “yo-yo dieting” refers to weight fluctuations that...

Doctors are exploring the possibility that a cold water plunge may be more effective than strong painkillers in relieving persistent pain after surgery. The experts reached this conclusion after a 28-year-old patient reported that a swim in cold water provided him with instant <a href="https://www.earth.com/news/opioid-deaths-chronic-pain/">pain relief</a>.

The patient had recently undergone surgery  which involved cutting nerves inside of his chest. Despite a successful procedure, the man remained in severe pain for the next ten weeks that could not be relieved using strong painkillers or therapy.

The patient explained that the constant amount of pain he was enduring was completely ruining his quality of life. Prior to surgery, the man had been a triathlete and swam competitively in open water. He decided to find out if a cold water swim may at least distract him from his unbearable pain.

After the young man plunged into the ocean from some rocks, he discovered that he felt no pain. Incredibly, the pain has not returned since, and the patient's quality of life has been restored without a need for painkillers.

The study authors acknowledge the fact that this is only an isolated case at this point.

“Due to the nature of retrospective case reports, it is unclear, without further evidence, whether the exposure to forced cold water swimming is causally and specifically related to pain remission,” the researchers wrote.

Without any alternative explanations of how the patient was completely alleviated of pain, however, it seems that the cold water plunge may have done the trick.

The doctors theorize that the shock of the sudden cold water immersion may have induced a wave of sympathetic nervous system activity, which would have altered the patient's pain perception. They also speculate that diving into the water may have broken a cycle of immobility that was causing the pain to persist.

Nerve pain can be very difficult to treat and can cause psychological problems if it does not respond to conventional treatment. The doctors will seek out more evidence to determine if a cold water plunge may succeed where painkillers fail.

"Further prospective [exploratory] investigation is needed to assess the replicability and feasibility of forced cold water swimming as a potentially effective, natural intervention to enhance recovery outcomes from common postoperative complications.”

The study is published in the journal <a href="http://casereports.bmj.com/">BMJ Case Reports</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

A cold water swim can provide incredible pain relief

Doctors are exploring the possibility that a cold water plunge...

Generations ago, many medical maladies were treated using natural methods. As technology and medical knowledge improved, pharmaceuticals were invented and refined, and some of those natural methods became clinically-proven medications. 

But now it seems that many people are looking to go back to more natural remedies for their medical issues, creating a growing demand for “nutraceuticals.” The term is a broad category that lives in a grey area between <a href="https://www.earth.com/news/mindfulness-reduce-cravings-food/">food</a> and pharmaceuticals, describing foods that possess a medicinal benefit. The products are thought to provide medical and health benefits “beyond the diet, but before the drugs.”

Now, a review published in the <a href="http://bpspubs.onlinelibrary.wiley.com/hub/journal/10.1111/(ISSN)1365-2125/">British Journal of Clinical Pharmacology</a> analyzes the potential of nutraceuticals, and stresses the need for a proper definition of nutraceuticals and necessary regulations to ensure their safety. The researchers state in their review that nutraceuticals with proven efficacy and health benefits proven by clinical data could be powerful tools to treat and prevent some medical conditions, especially for patients that are not yet eligible for some conventional pharmaceutical drugs.

Getting to this point would require a proper definition of nutraceuticals, clinical studies on their safety and efficacy, and standardized regulations for their use. 

According to the authors, nutraceuticals also require a specific classification separate from food supplements and pharmaceuticals. They propose the following definition for nutraceuticals: “the phytocomplex of a vegetable or the pool of secondary metabolites from an animal. Both are concentrated and administered in a pharmaceutical form and are capable of providing beneficial health effects, including the prevention and/or treatment of a disease.”

The growing demand for nutraceuticals makes a need for more efficient classification more necessary than ever.

“We propose a regulatory system that is similar to the one used for drugs, which is more rigorous and more complex than the one commonly accepted for food supplements,” says Dr. Ettore Novellino of the <a href="http://www.unina.it/unina-international">University of Napoli Federico II</a> in Italy, an author on the study. “It is important for consumer protection that national authorities and regulatory agencies require manufacturers to provide data to support any claim in the labels of products when the term nutraceutical is used.”

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Are trendy nutraceuticals actually effective or dangerous?

Generations ago, many medical maladies were treated using natural methods....

In an effort to combat <a href="https://www.earth.com/news/china-air-pollution-years/">air pollution</a> and climate change, China is planning to construct the world's first city that is made up of vertical forests. Every building in the Liuzhou Forest City including houses and schools will be covered entirely in plants and trees.

The forest will include almost a million plants of 100 species and tens of thousands of trees. Nearly 10,000 tons of carbon dioxide and 57 tons of pollutants will be absorbed by the massive collection of greenery, while approximately 900 tons of oxygen will be generated.

The city will be north of Liuzhou in a mountainous region of southern China along the Liujiang river. It will cover around 342 acres with over 70 buildings. 

Around 30,000 residents will have electricity provided by solar panels and air conditioning powered by geothermal energy. Forest City will also have a fast rail line that connects to Liuzhou for electric cars.

The green city was designed at <a href="https://www.stefanoboeriarchitetti.net/">Stefano Boeri Architetti</a>, a Milan-based studio of architecture founded by Stefano Boeri. In addition to curbing air pollution, the abundant vegetation is expected to reduce noise pollution, promote cooler temperatures, and improve biodiversity in the region.

Stefano Boeri explained: “For the first time in China and in the world, an innovative urban settlement will combine the challenge for energy self-sufficiency and for the use of renewable energy with the challenge to increase biodiversity and to effectively reduce air pollution in urban areas - which is really critical for present-day China - thanks to the multiplication of vegetable and biological urban surfaces.”

The Liuzhou Municipality Urban Planning Bureau has approved the plan, and construction will begin in the year 2020.

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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

Image Credit: Stefano Boeri Architetti

China is set to construct the world’s greenest city

In an effort to combat air pollution and climate change,...

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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?

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



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



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



Video/ Image Credit: ESA



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



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

Santiago, Chile in South America

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

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

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



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



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



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



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



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



Video Credit: Johns Hopkins&nbsp;



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



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

Interactive map of the universe includes 200,000 galaxies

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

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



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



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



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



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



Video Credit: ESA&nbsp;&nbsp;



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



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

Lesotho: Africa's "Kingdom in the Sky"

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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

[sendtonews key="6HyfrAJTBI-1831843-12187" type="single"] Today’s Video of the Day from the...

Earth,Like,Exoplanet,3d,Render

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



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



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



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



Video Credit: NASA Goddard



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



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



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

Two distant planets may be "water worlds"

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

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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

Satellites reveal how Earth's systems are interconnected

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

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



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



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



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



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



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



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



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

Tiger sharks are shifting poleward as temperatures rise

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

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



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



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



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



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



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



Video Credit: ESA&nbsp;



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



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

Melt ponds on the Greenland Ice Sheet

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



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



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



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



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



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



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



Video Credit: ESA



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



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

The history of Mars is much more complex than we thought

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



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



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



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



Video Credit: Stowers Institute for Medical Research



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



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

Cavefish are healthy despite their sedentary lifestyle

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> some of the most incredible waves in the world, as seen by Landsat satellites.



"With more than 370,000 miles of coastline on Earth, there are plenty of places where epic waves build up, curl over, and hurtle toward the shore.- much to the thrill of surfers," says NASA. "There are some places where these waves are so magnificent that they can be seen from space."



"With the broad perspective of satellites, we can see how these iconic waves develop into the world’s tallest, longest, fastest, and heaviest."



Video Credit: NASA Earth Observatory&nbsp;



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



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

Satellites capture the world's biggest and fastest waves

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes why satellite images and measurements of our planet have become "essential to our survival, offering a new outlook of our world."&nbsp;



Rising sea levels pose one of the biggest societal threats associated with climate change. According to ESA, satellite altimeter missions such as Copernicus Sentinel-6 are essential in monitoring global and regional changes in sea level.



"Unbeknown to many, the island of Crete, Greece, plays an important role in the Copernicus satellite altimetry constellation and on an international stage," reports ESA.



"Satellite altimetry data have to be continuously monitored at the ESA’s Permanent Facility for Altimetry Calibration where different techniques have pioneered the use of transponders to provide the best measurements to validate satellite altimeters in space soon after launch."



Dr. Craig Donlon explains that, by understanding planet Earth through satellite measurements, we are able to find evidence of change.&nbsp;



Video Credit: European Space Agency&nbsp;



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

Satellites have become essential to our survival

[sendtonews key="761m2QQvR1-2035772-12187" type="single"] Today’s Video of the Day from the...