A new study published in the journal <a href="https://academic.oup.com/edrv/advance-article-abstract/doi/10.1210/endrev/bnab027/6371193?redirectedFrom=fulltext">Endocrine Reviews</a> has found that time-restricted eating, or intermittent fasting, is an excellent method for the prevention and management of <a href="https://www.earth.com/news/obesity-and-high-fat-diets-may-contribute-to-hair-loss/">obesity</a>, cardiometabolic diseases, or liver diseases. It can also improve sleep patterns and quality of life in general.



Intermittent fasting, or eating within a consistent window of eight to ten hours each day, is a popular dietary trend that has often been used in order to lose weight.&nbsp;



A research team led by the <a href="https://www.salk.edu/">Salk Institute for Biological Studies</a> has discovered that this method also appears to be a very powerful strategy to prevent and manage a whole range of chronic diseases, including diabetes or cardiovascular diseases.&nbsp;



Study lead author Satchidananda Panda is a professor at the Salk Institute who explores the genes, molecules, and cells that are involved in circadian rhythms.



“People who are trying to lose weight and live a healthier lifestyle should pay more attention to when&nbsp;they eat&nbsp;as&nbsp;well as&nbsp;what&nbsp;they eat.&nbsp;Time-restricted eating&nbsp;is an easy-to-follow&nbsp;and effective&nbsp;dietary strategy that requires less mental math than counting calories. Intermittent fasting can improve sleep and a person’s quality of life as well as reduce&nbsp;the&nbsp;risk&nbsp;of&nbsp;obesity, diabetes and heart disease,” said Professor Panda.



The researchers confirmed that the expression of genes, hormone levels, and metabolic processes in general rise and fall during different times of the day. Thus, aligning our daily eating schedules with our bodies’ internal clocks can significantly improve health and reduce the possibility of developing chronic diseases. 



Moreover, <a href="https://www.ahajournals.org/doi/10.1161/CIRCRESAHA.120.318155">previous studies</a> have also found that intermittent fasting can reduce hypertension by reshaping the composition of the gut microbiota.



“Eating at random times breaks the synchrony of our internal program and make us prone to diseases,” explained Professor Panda. "Intermittent fasting is a lifestyle that anyone can adopt. It can help eliminate health disparities and lets everyone live a healthy and fulfilling life."



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Intermittent fasting improves health

A new study published in the journal Endocrine Reviews has found that time-restricted eating, or intermittent fasting, is an excellent method for the prevention and management of obesity, cardiometabolic diseases, or liver diseases. It can also improve sleep patterns and quality of life in general. Intermittent fasting, or eating within a consistent window of eight to ten hours each day, is a popular dietary trend that has often been used in order to lose weight.&nbsp; A research team led by the Salk Institute for Biological Studies has...

A new study led by the <a href="https://www.umontreal.ca/en/">University of Montreal</a> has found that boys who engage in <a href="https://www.earth.com/news/sports-activities-are-particularly-beneficial-for-young-girls/">sports</a> activities in early childhood are less prone to experience emotional distress in middle childhood. Additionally, they are more likely to continue to be physically active during adolescence.&nbsp;



By studying data from a Quebec cohort of children born in 1997 and 1998 (690 boys and 748 girls), the researchers aimed to clarify the long-term and reciprocal relationship between participation in sports and depressive and anxiety symptoms in school-aged children.



“There’s widespread evidence of a crisis these days in childhood physical inactivity, and this may ultimately have implications for later mental and physical health,” said study lead author Marie-Josée Harbec, a doctoral student at the University of Montreal.&nbsp;



“We also wanted to examine whether this relationship worked differently in boys and girls between the ages of 5 and 12.”



Together with her PhD supervisor Linda Pagani, a professor of Psychoeducation, Harbec examined the sporting activity habits reported by children at ages 5 to 12 years and their parents, and looked at symptoms of emotional distress from 6 to 12 years that were reported by these children’s teachers.



“We found that 5-year-old boys who never participated in sports were more likely between the ages of 6 and 10 to look unhappy and tired, had difficulty having fun, cried a lot, and appeared fearful or worried,” said Professor Pagani.&nbsp;



“Also, boys who exhibited higher levels of depressive and anxious symptoms during middle childhood were subsequently less physically active at 12 years old.”



In the case of girls, however, no significant changes were found. Boys who engage in sports might be more prone to develop life skills such as taking initiative, engaging in teamwork, practicing self-control, and building supportive relationships, while physically inactive ones run the risk of becoming socially-isolated and develop mental health issues.&nbsp;



Girls, on the other hand, appear to be from the start more open to seek help and disclose emotional distress to family, friends, or healthcare workers, and the psychological support they receive might protect them better.



“Also, because more girls experience emotional distress than boys, this gender-related risk may have led to early identification and intervention for girls,” added Harbec.



The study is published in the <a href="https://journals.lww.com/jrnldbp/pages/default.aspx">Journal of Developmental &amp; Behavioral Pediatrics</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Boys who play sports as young children have better mental health

A new study led by the University of Montreal has...

In a new study led by the <a href="https://www.arizona.edu/">University of Arizona</a>, an international team of archaeologists and anthropologists described and contextualized the oldest pieces of jewelry yet discovered, dating back between 142,000 and 150,000 years ago: a set of 33 shell beads found in the Bizmoune Cave from southwest Morocco. Their appearance signals crucial developments in human cognition and <a href="https://www.earth.com/news/social-support-can-protect-your-brain-health/">social</a> relations.&nbsp;



The beads were made from sea snail shells and measured roughly half an inch in length. Holes in their center and other signs of wear and tear indicate that they were hung from clothing or on strings. According to study lead author Steven L. Kuhn, a professor in the <a href="https://anthropology.arizona.edu/">School of Anthropology</a> at the University of Arizona, these beads are the earliest known evidence of a form of nonverbal human communication.&nbsp;



“They were probably part of the way people expressed their identity with their clothing,” he explained. “They show that it was present even hundreds of thousands of years ago, and that humans were interested in communicating to bigger groups of people than their immediate friends and family.”



These ancient beads are associated with the Aterian culture, a Middle and Late Paleolithic tool industry located in northern Africa. The Aterian people were among the first to use bows and arrows to hunt a large variety of animals, including gazelles, rhinoceros, warthogs, and wildebeests. The discovery of the jewelry that they also produced opens new questions regarding their cognitive and social structures.



According to Professor Kuhn, these ornamental pieces of material culture are clearly symbolic and were probably marks of group identity in a period when clans or other allegiances were developed in order to protect limited resources.&nbsp;



Rather than painting their bodies or faces in order to signify their social belonging, as earlier people did, the beads’ makers produced something more long-lasting, suggesting that the message they tried to convey was a very important one and that their sense of social identity was particularly strong.



Further research is needed to shed more light on the cognitive developments that prompted such behaviors and the social and cultural factors that sustained them.&nbsp;



The study is published in the journal <a href="https://www.science.org/doi/10.1126/sciadv.abi8620#con1">Science Advances</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

The world’s oldest jewelry discovered in Morocco

In a new study led by the University of Arizona,...

Obesity is considered a world-wide epidemic and has been associated with many <a href="https://www.earth.com/news/insects-from-jamaica-transmit-diseases-to-florida-palm-trees/">diseases</a> in humans, including heart disease and diabetes. Despite this, the precise mechanisms whereby obesity effects organ dysfunction are not known.&nbsp;



In a recent article published in&nbsp;Nature, researchers from <a href="https://www.tmd.ac.jp/english/">Tokyo Medical and Dental University</a> (TMDU) identified a mechanism whereby genetically induced obesity or eating a high-fat diet can lead to hair thinning and loss in laboratory mice.&nbsp;



Hair follicles are tiny epithelial organs that grow hair, thanks to the action of hair follicle stem cells (HFSCs). These cells replenish themselves at the start of every new hair follicle cycle, which enables us to grow our hair back after it falls out naturally. Unfortunately, HFSCs become depleted as we age, which leads to miniaturization of hair follicles and consequent thinning of our hair.



The researchers from TDMU used mouse models to investigate whether genetically induced obesity and eating a high-fat diet accelerate hair loss, and to establish the molecular mechanisms involved.



The experts found that both obesity and eating a high-fat diet can lead to depletion of hair follicle stem cells (HFSCs) and that these cells begin to differentiate into keratinized skin cells, rather than forming new hair follicles. This blocks hair follicle regeneration and ultimately results in the loss of hair follicles. Even when young mice are fed a high-fat diet for only four consecutive days, their HFSCs show increased oxidative stress and begin to exhibit abnormal differentiation into skin cells.&nbsp;



“High-fat diet [HFD] feeding accelerates hair thinning by depleting HFSCs that replenish mature cells that grow hair, especially in old mice,” explained study lead author Hironobu Morinaga. “We compared the gene expression in HFSCs between HFD-fed mice and standard diet-fed mice and traced the fate of those HFSCs after their activation.”



“We found that those HFSCs in HFD-fed obesed mice change their fate into the skin surface corneocytes or sebocytes that secrete sebum upon their activation. Those mice show faster hair loss and smaller hair follicles along with depletion of HFSCs.”&nbsp;



The data demonstrate that stem cell inflammatory signals induced by obesity robustly repress organ regeneration signals, thereby accelerating the miniaturization of the hair follicles.&nbsp;



“The gene expression in HFSCs from the high-fat-fed mice indicated the activation of inflammatory cytokine signaling within HFSCs,” explained senior author Emi K. Nishimura. “The inflammatory signals in HFSCs strikingly repress Sonic hedgehog signaling that plays a crucial role in hair follicle regeneration in HFSCs”.



The researchers also found that re-activation of the Sonic hedgehog signaling pathway can reverse the depletion of HFSCs. “This could prevent the hair loss brought on by the high-fat diet,” said Nishimura. The discovery could lead to new methods for preventing and treating hair thinning as well to enhanced understanding of obesity-related diseases.



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By <a href="mailto:bosman@truewan.co.za">Alison Bosman</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Obesity and high-fat diets may contribute to hair loss

Obesity is considered a world-wide epidemic and has been associated...

A new study published in the journal <a href="https://www.science.org/doi/10.1126/scirobotics.abd5186">Science Robotics</a> has found that socially interactive robots built to assist <a href="https://www.earth.com/news/drawing-memory-retention-seniors/">seniors</a> with their daily living should be constructed as collaborative and peer-oriented rather than dominant and authoritative. This will maximize humans’ acceptance of their advice and assistance.&nbsp;



“When robots present themselves as human-like social&nbsp;agents, we tend to play along with that sense of humanity&nbsp;and treat them much like we would a&nbsp;person,” explained study&nbsp;lead author Shane&nbsp;Saunderson, a specialist in human-robot interaction at the <a href="https://www.utoronto.ca/">University of Toronto.</a>&nbsp;



“But even simple tasks, like asking someone to take their medication, have a lot of social depth to them. If we want to put robots in those situations, we need to better understand the psychology of robot-human interactions.”&nbsp;



According to Saunderson and his team, in order to understand how to build better robots, scientists should first understand the concept of “authority” and how to incorporate it into their machines. The researchers found that this concept can be divided into two: formal authority and real authority.



“Formal authority comes from your role: if someone is your boss, your teacher or your parent, they have a certain amount of formal authority,” Saunderson explained. “Real authority has to do with&nbsp;the control of decisions, often for&nbsp;entities&nbsp;such as&nbsp;financial rewards or punishments.



Saunderson and his colleagues devised a humanoid robot named Pepper and used it to help 32 volunteer participants to complete a series of tests. For some subjects, Saunderson was presented a formal authority figure, with Pepper as a simple helper, while for others Pepper was introduced as the authoritative leader of the experiment.



The researchers discovered that Pepper was less persuasive when presented as a strong authoritative figure than when introduced as a peer helper. “Social robots are not commonplace today, and in North America at least, people&nbsp;lack both relationships and a sense of shared identity with robots. It might be hard for them to come to see them as a legitimate authority,” explained Saunderson.&nbsp;



Thus, the scientists concluded that in order to create positive experiences in contexts of human-robot interaction, robots should be constructed as peer-oriented and collaborative rather than dominant and authoritative.&nbsp;



“This ground-breaking research provides an understanding of how persuasive robots should be developed and deployed in everyday life, and how they should behave to help different demographics,&nbsp;including our vulnerable populations such as older adults,”&nbsp;concluded study co-author Goldie Nejat.&nbsp;



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Friendly robots are more helpful than authoritative ones

A new study published in the journal Science Robotics has...

If as a child, your parents forced <a href="https://www.earth.com/news/broccoli-and-cabbage-reduce-the-risk-of-heart-attack/">broccoli</a> on you against your will, you know that Brassica vegetables (including cauliflower, cabbage and brussel sprouts) are often unloved. A new study from the <a href="https://www.acs.org/">American Chemical Society</a> reveals the science behind why some kids are so repulsed by eating these vegetables.



The research shows that as the unwanted vegetable touches the tongue, a chemical reaction occurs. An enzyme that exists within the microbiome of some people’s saliva reacts with the plant, creating a sulfurous odor. Needless to say, this is unpleasant.&nbsp;



While previous research showed that adults have various levels of this enzyme within their mouths, the new study confirms that the same is true for children as well. Looking at the various levels of the enzyme, the scientists analyzed how this affects whether a child likes Brassica vegetables or not.



Using mass spectrometry, the scientists separated the active compounds causing the unpleasant taste reaction from steamed vegetables. Next, parent child pairs were tested for their reaction to the foul smelling compounds. The researchers mixed saliva with powdered cauliflower to see how much of the noxious chemical was produced by the interaction. There was great variability in how much of the smelly chemicals were produced by each saliva interaction.



Interestingly, in children, those whose saliva caused the worst reactions had the strongest dislike for Brassica vegetables. In adults, there was no cause and effect relationship between a dislike for Brassica and overactive saliva enzymes. The researchers also found that there was a lot in common between the saliva microbiome of a child and his or her parent.&nbsp;



The study has real world relevance because in most western countries, vegetable consumption is below daily recommendations. This health faux pas may be partially due to the microbes living in our mouths.&nbsp;&nbsp;



The research is published in the <a href="https://pubs.acs.org/journal/jafcau">Journal of Agricultural and Food Chemistry</a>.



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By <a href="mailto:zachfitzner@yahoo.com">Zach Fitzner</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Kids' dislike for vegetables caused by microbes in the mouth

If as a child, your parents forced broccoli on you...

Researchers at the <a href="https://www.rush.edu/">Rush University Medical Center</a> found that the MIND diet, a hybrid of the Mediterranean and DASH (Dietary Approaches to Stop Hypertension) diets, significantly slows <a href="https://www.earth.com/news/colorful-foods-can-prevent-cognitive-decline/">cognitive</a> decline in older adults and improves their cognitive functioning. 



The MIND diet includes at least three servings of whole grains, a green leafy vegetable, and another vegetable of choice per day, washed away with a glass of wine, together with frequent nut snacks. It should also include regular consumption of beans (every two days), poultry and berries (twice per week), and fish (once per week.) A person following the MIND diet should significantly limit items such as butter, sweets, pastries, whole fat cheese, and fried or fast foods.



<a href="https://www.rush.edu/news/new-mind-diet-may-significantly-protect-against-alzheimers-disease">Previous studies</a> have already suggested that following a MIND diet can significantly protect against Alzheimer’s disease and dementia. According to the new research, which is published in the <a href="https://content.iospress.com/articles/journal-of-alzheimers-disease/jad210107">Journal&nbsp;of Alzheimer’s Disease</a>, participants in a longitudinal study who moderately followed the MIND diet had increased cognitive functioning later in life.&nbsp;&nbsp;



“Some people have enough plaques and tangles in their brains to have a postmortem diagnosis of Alzheimer’s disease, but they do not develop clinical dementia in their lifetime,” said study&nbsp;lead author Klodian Dhana, an assistant professor in the&nbsp;<a href="https://www.rushu.rush.edu/research/departmental-research/internal-medicine-research/geriatrics-gerontology-and-palliative-medicine-research">Division of Geriatrics and Palliative Medicine</a> at&nbsp;Rush Medical College.&nbsp;



“Some have the ability to maintain cognitive function despite the accumulation of these pathologies in the brain, and our study suggests that the MIND diet is associated with better cognitive functions independently of brain pathologies related to Alzheimer’s disease.”



Participants from the&nbsp;ongoing <a href="https://www.rushu.rush.edu/research/departmental-research/memory-and-aging-project">Memory and Aging Project</a>, which has begun in 1997, were given a score according to how closely they followed the MIND diet and undertook annual evaluations and cognitive tests. The scientists found that participants with higher MIND diet scores performed significantly better at cognitive tests and showed less signs of cognitive decline as they grew older.&nbsp;



“We found that a higher MIND diet score was associated with better memory and thinking skills independently of Alzheimer's disease pathology and other common age-related brain pathologies. The diet seemed to have a protective capacity and may contribute to cognitive resilience in the elderly,” explained Professor Dhana.



“Diet changes can impact cognitive functioning and risk of dementia, for better or worse. There are fairly simple diet and lifestyle changes a person could make that may help to slow cognitive decline with aging, and contribute to brain health."



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

The MIND diet slows cognitive decline

Researchers at the Rush University Medical Center found that the...

Men’s <a href="https://www.earth.com/news/sleeping-heart-disease-risk/">sleeping</a> patterns might be more powerfully influenced by the lunar cycle than women’s, according to a new study published in the journal <a href="https://www.sciencedirect.com/science/article/pii/S0048969721052992?via%3Dihub">Science of the Total Environment</a>. Researchers from <a href="https://www.uu.se/en">Uppsala University</a> found that men tend to sleep worse on nights during the first half of the lunar cycle.



For decades, scientists have struggled to understand whether any correlation between sleep patterns and the lunar cycle exists in humans. The results have been rather conflicting, with some studies finding strong correlations and others finding none.&nbsp;



Moreover, most previous studies faced a serious methodological problem: they did not control their analyses for variables that are known to have a significant impact on human sleep, such as insomnia or obstructive sleep apnea.



Led by Dr. Christian Benedict, an associate professor of Neuroscience at Uppsala, a team of researchers aimed to address these problems by adjusting their findings to chronic sleep problems such as insomnia or sleep apneas. Additionally, their study is the first to investigate sex-specific associations of the lunar cycle with sleep.&nbsp;



The lunar cycle can be described in terms of a waxing and waning period. During the waxing period, the amount of the illuminated moon surface as observed from the Earth increases, and the time when the moon passes a place’s meridian gradually shifts to late evening. By contrast, during the moon’s waning period, the illuminated moon surface decreases and the moment when the moon crosses a location’s meridian shifts to daytime.&nbsp;&nbsp;



"We used one-night at-home sleep recordings from 492 women and 360 men,” reported Dr. Benedict. “We found that men whose sleep was recorded during nights in the waxing period of the lunar cycle exhibited lower sleep efficiency and increased time awake after sleep onset compared to men whose sleep was measured during nights in the waning period. In contrast, the sleep of women remained largely unaffected by the lunar cycle. Our results were robust to adjustment for chronic sleep problems and obstructive sleep apnea severity.”&nbsp;



The experts think that the moon might impact sleep through the presence of the sunlight reflected by the moon at times when people usually go to sleep, and that the male brain could be more sensitive to ambient light than the female brain.



Dr. Benedict concluded that it is difficult to understand whether the association of sleep with the lunar cycle was causal or just correlative. Further research is needed to disentangle the peculiar relationship that exists between human sleep and the moon.&nbsp;



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

The moon disrupts sleep among men more than women

Men’s sleeping patterns might be more powerfully influenced by the...

A new study published in <a href="https://link.springer.com/article/10.1007%2Fs10902-021-00440-y">The Journal of Happiness Studies</a> has investigated the impact of fruit, vegetables and exercise on individual <a href="https://www.earth.com/news/cuddling-with-dogs-can-improve-your-well-being/">well-being</a>. The experts found that fruit and vegetable consumption, along with physical activity, increase general life satisfaction.



While correlations between healthy lifestyles and well-being have previously been documented and used in public health campaigns advocating the value of healthier diets and exercise, this new study shows that there is also a positive causation between a healthy lifestyle and general wellbeing.&nbsp;



“There has been a bigger shift in recent years for healthier lifestyle choices. To establish that eating more fruit and vegetables and exercising can increase happiness as well as offer health benefits is a major development,” said study co-author Uma Kambhampati&nbsp;from the <a href="http://www.reading.ac.uk/">University of Reading</a>. “This may also prove useful for policy campaigns around environment and sustainability.”



The researchers argued that the capacity of individuals to delay gratification and apply self-control plays a fundamental role in influencing lifestyle decisions. This ability enables individuals to give greater weight to the investment component of their lifestyle, which might not always be pleasant, rather than merely the affective component, where desires are gratified immediately.&nbsp;



For example, many people engage in strenuous physical exercise as a long-term goal of increasing their wellbeing, instead of munching tasty fast foods on their couches to achieve instant gratification.&nbsp;



"Behavioral nudges that help the planning self to reinforce long-term objectives are likely to be especially helpful in maintaining a healthy lifestyle,” explained lead study author Dr. Adelina Gschwandtner, a senior lecturer at the University of Kent’s <a href="https://www.kent.ac.uk/economics">School of Economics</a>. “If a better lifestyle not only makes us healthier but also happier, then it is a clear win-win situation.”



Humans’ unique ability to invest in long-term goals of maintaining good health and well-being by consuming fruits and vegetables and engaging in sports activities is now proven to be also a source of mental well-being and thus overall life satisfaction.&nbsp;



Although men are generally shown to be more willing to exercise and women more prone towards healthy eating, both genders appear to be particularly good long-term planners, able to delay instant gratification in order to achieve later and more prolonged states of well-being and life satisfaction.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Fruit, vegetables, and exercise can increase life satisfaction

A new study published in The Journal of Happiness Studies...

Failure to meet the recommended guidelines of seven or more hours of <a href="https://www.earth.com/news/sleep-deprivation-linked-to-quickly-deteriorating-mood-in-teens/">sleep</a> per night has been linked to unhealthy snacking. Experts in the School of Health and Rehabilitation Sciences at <a href="https://www.osu.edu/">The Ohio State University</a> analyzed data on nearly 20,000 Americans and found that individuals who fall short of sleep recommendations eat more snacks that are high in carbohydrates, added sugar, and fat.



The results of the analysis show that the most preferred non-meal food categories - salty snacks and sweets - are the same among adults regardless of their sleep habits. However, individuals who sleep less tend to consume more snack calories in a day.



The study authors found that nighttime snacking is a habit among Americans that is tied to how much we sleep. “At night, we’re drinking our calories and eating a lot of convenience foods,” said study senior author Professor Christopher Taylor.



“Not only are we not sleeping when we stay up late, but we’re doing all these obesity-related behaviors: lack of physical activity, increased screen time, food choices that we’re consuming as snacks and not as meals. So it creates this bigger impact of meeting or not meeting sleep recommendations.”



“We know lack of sleep is linked to obesity from a broader scale, but it’s all these little behaviors that are anchored around how that happens."



The analysis showed that almost 96 percent of the subjects ate at least one snack a day. More than 50 percent of all snacking calories fell under two broad categories: soda and energy drinks; and chips, pretzels, cookies and pastries.&nbsp;



Overall, the participants who slept less than seven hours a night ate higher quantities of snacks with more calories and less nutritional value.



While there are many physiological factors involved in sleep’s relationship to health, Taylor said changing behavior by avoiding unhealthy snacking at night could help adults not only meet the sleep guidelines, but also improve their diet.



“Meeting sleep recommendations helps us meet that specific need for sleep related to our health, but is also tied to not doing the things that can harm health,” said Taylor.&nbsp;



“The longer we’re awake, the more opportunities we have to eat. And at night, those calories are coming from snacks and sweets. Every time we make those decisions, we’re introducing calories and items related to increased risk for chronic disease, and we’re not getting whole grains, fruits and vegetables."



“Even if you’re in bed and trying to fall asleep, at least you’re not in the kitchen eating – so if you can get yourself to bed, that’s a starting point.”



The study is published in the <a href="https://jandonline.org/">Journal of the Academy of Nutrition and Dietetics</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

Lack of sleep leads to unhealthy snacking

Failure to meet the recommended guidelines of seven or more...

Stress is a normal and integral part of everyday modern life with many manifestations, whether in terms of sleepless nights, racing heartbeats, sweaty palms or “butterflies” in the stomach.&nbsp;



In conventional thinking, stress is something bad that should be avoided if possible. It has been linked to a range of illnesses, including heart disease, <a href="https://www.earth.com/news/is-the-obesity-crisis-linked-to-the-use-of-a-common-pesticide/">obesity</a>, depression, cancer and diabetes. However, a new study finds that stress can be harnessed and put to use if we reframe our thoughts to see it as a challenge, rather than a threat.



Psychologists from the <a href="https://www.rochester.edu/">University of Rochester</a> hypothesize that reframing our perception of stress in terms of its functional benefits helps reduce the sense of threat and can make a positive difference to a person’s mental health and general wellbeing.&nbsp;



In their study, published recently in the <a href="https://www.apa.org/pubs/journals/xge">Journal of Experimental Psychology</a>: General, the scientists randomly assigned 339 students from community college to stress reframing or to control conditions just before taking their second in-class exam. Those in the reframing group were trained to perceive stress as a useful tool rather than an obstacle. This training took the form of a standardized reading and writing exercise that highlighted the fact that stress responses have a function in enhancing performance, including the performance on academic tests.&nbsp;



“We use a type of ‘saying is believing’ approach whereby participants learn about the adaptive benefits of stress and they are prompted to write about how it can help them achieve,” says study lead author Professor <a href="http://www.sas.rochester.edu/psy/people/faculty/jamieson_jeremy/index.html">Jeremy Jamieson</a>, the principal investigator at Rochester's&nbsp;<a href="https://socialstresslab.wixsite.com/urochester">Social Stress Lab</a>.



The results showed that math students who had been trained to reframe their stress as a positive tool exhibited lower levels of test anxiety on a subsequent exam. In addition, they achieved better scores on the exam than the control group. Trained students reported procrastinating less during the learning process and also set themselves more positive goals – goals focused on achieving good outcomes (such as passing the test) rather than avoiding negative outcomes (like not failing the test).&nbsp;



During the typical stress response, the sympathetic nervous system is aroused and this leads to increased heartbeat and sweaty palms, among other physical changes. These changes prepare a person to respond to perceived danger by fighting or fleeing.&nbsp;



For example,&nbsp;a person who has to undergo a job interview might experience a racing heartbeat and interpret this as nervousness that could sabotage performance. If the person were to understand that the increased heart rate delivers extra oxygen to the brain and will therefore enhance intellectual performance, the stress response becomes an ally and not a foe.&nbsp;



During the experience of stress, several different hormones are released into the blood, some helpful and some not. The research team found that students who were trained to reframe their perception of stress had lower levels of cortisol, a catabolic hormone that breaks down body tissues. On the other hand, they also had higher levels of testosterone, an anabolic hormone that builds body mass and enhances performance and endurance. This hormonal change would help a student to perform at his or her peak.



When asked what advice they had for parents whose children felt stressed or anxious, the team responded that stress is a normal part of life and that parents should help their children learn to cope constructively with stress rather than try to protect them from it. Children have to go out of their comfort zones in order to grow, learn and succeed. They should be taught that struggles are part of life and that they can succeed at doing difficult things.&nbsp;



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By <a href="mailto:bosman@truewan.co.za">Alison Bosman</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Look at stress as a challenge rather than a threat

Stress is a normal and integral part of everyday modern...

A collection of new studies published in the journal <a href="https://www.nature.com/">Nature</a> explores how leveraging the diversity of aquatic food products (“blue foods”) in the following decades could mitigate malnutrition, increase global health, and lower the environmental footprint of the <a href="https://www.earth.com/news/supermarket-layout-influences-food-choice-and-diet/">food</a> system. These studies are the first in a series produced by the&nbsp;<a href="https://bluefood.earth/what-we-do/" target="_blank" rel="noreferrer noopener">Blue Food Assessment</a>&nbsp;(BFA), a group of over 100 experts aiming to assess the benefits of eating aquatic plants and animals.&nbsp;



“Few, if any, countries are developing their blue food sector to provide ecological, economic, and health benefits to its full potential,” said BFA co-chair Rosamond Naylor. “This assessment aims to provide the scientific foundation for decision-makers to evaluate trade-offs and implement solutions that will make blue foods an instrumental part of an improved food system from local to global scales.”



According to the experts, blue foods have more nutritional benefits than terrestrial animal-source foods. Compared to chicken, trout has 19 times more omega-3 fatty acids, oysters and mussels have 76 times more vitamin B-12 and five times more iron, and carps have none times more calcium.



Blue foods are also significantly more sustainable, with many aquatic species such as sardines, anchovies, bivalves, and seaweeds having environmental footprints lower than that of chicken - which represents the lowest impact of terrestrial meat.



“People are trying to make more informed choices about the food they eat, in particular the environmental footprint of their food,”&nbsp;explained Ben Halpern, a marine biologist from the <a href="https://www.ucsb.edu/">University of California, Santa Barbara</a>.&nbsp;



Together with several colleagues, Halpern explored the&nbsp;<a href="https://www.nature.com/articles/s41586-021-03889-2">environmental sustainability of blue foods</a>,&nbsp;<a href="https://www.nature.com/articles/s43016-021-00363-0">the opportunities for growth of small-scale producers</a>,&nbsp;and the&nbsp;<a href="https://www.nature.com/articles/s43016-021-00368-9">climate risks facing aquatic food systems</a>.&nbsp;



“For the first time we pulled together data from hundreds of studies on a wide range of seafood species to help answer that question. Blue foods stack up really well overall and provide a great option for sustainable food,” he added.



Currently, over 2,500 species of fish and aquatic plants are caught or cultivated for food, providing sustenance for more than one billion people. Researchers hope that in the following decades, blue foods will become even more important, providing not only a healthier food source, but also a more environmentally friendly one.&nbsp;&nbsp;



The Blue Food Assessment group is led by Stanford University’s&nbsp;<a href="https://oceansolutions.stanford.edu/">Center for Ocean Solutions</a>&nbsp;and&nbsp;<a href="https://fse.fsi.stanford.edu/">Center on Food Security and the Environment</a>, the&nbsp;Stockholm University’s <a href="https://www.stockholmresilience.org/">Resilience Centre</a>, and&nbsp;<a href="https://eatforum.org/">EAT</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Blue foods are healthy and environmentally friendly

A collection of new studies published in the journal Nature...

In a new report from <a href="https://www.cardiff.ac.uk/">Cardiff University</a>, experts say that changing diets to tackle <a href="https://www.earth.com/news/young-people-are-increasingly-anxious-over-climate-change/">climate</a> change is unattainable for minority groups. The researchers found that a significant number of individuals in the lowest income and education groups cannot afford a healthier diet.



The experts say that making food more affordable for ethnic minority groups is crucial to reducing greenhouse gas emissions associated with the food industry.



The new research, published in the journal <a href="https://www.nature.com/natfood/">Nature Food</a>, shows that a healthy, more environmentally friendly diet is achievable for a large portion of the population. On the other hand, this type of diet is unaffordable for up to 38 percent of Black and Hispanic individuals in the lowest income and education groups, according to the study.&nbsp;



The researchers emphasize that a diet including more whole grains, dairy, fruit and vegetables, seafood, and plant protein, combined with lower levels of added sugars, refined grains, saturated fats and sodium, could be achieved within current food budgets for 95 percent of the US population.



Widespread adoption of the optimized diet could decrease food-related greenhouse gas emissions by two percent, land use by 24 percent, and energy consumption by four percent. At the same time, however, water consumption would increase by 28 percent.



The study authors are calling on policy makers to improve urban planning and infrastructure to lessen the time and monetary burden associated with accessing healthy food choices.



The experts are also calling for educational programs in schools to promote healthy eating. Land use and greenhouse gas emissions associated with U.S. diets are nearly double the world average.&nbsp;



The Cardiff study has revealed that on average, a individual's daily diet generates 3.4 kg of carbon dioxide emissions, 15.6 m2 of land use, 972 liters of blue water. At the national level, this is the equivalent of 385 megatons of carbon dioxide emissions, 1.77 million km2 of land, and 110 billion m3 of water.



“Our study shows that those who are well-paid and/or well educated are more likely to adopt healthier diets but are also responsible for larger environmental impacts in terms of greenhouse gas emissions, blue water footprint, land occupation, as well as energy consumption,” said study co-author Dr. Pan He.



“While shifting to a healthy diet can reduce the environmental impacts and is affordable for most people, this would be unattainable for disadvantaged groups who may still be stuck on the way of change."



“Policies that make nutritious food more affordable are needed to promote better nutrition and improved environmental outcomes simultaneously, particularly for more vulnerable socio-economic groups.”



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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

Healthier diets are not attainable for everyone

In a new report from Cardiff University, experts say that...

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Human impact on Earth's freshwater resources revealed Today's Video of the Day from <a href="https://www.nasa.gov/centers/goddard/video">NASA Goddard</a> reveals the surprising influence that humans have on Earth's freshwater resources.

In the first study to assess seasonal variability in water bodies worldwide, researchers have discovered that water levels in human-managed reservoirs fluctuate about four times more compared to natural lakes and ponds. 

"We tend to think of the water cycle as a purely natural system: Rain and snowmelt run into rivers, which run to the ocean where evaporation starts the whole cycle again," said study lead author Sarah Cooley of Brown University. "But humans are actually intervening substantially in that cycle. Our work demonstrates that humans are responsible for a majority of the seasonal surface water storage variability on Earth."

The study was focused on data from NASA's Ice, Cloud and Land Elevation Satellite (ICESat-2). The primary goal of the ICESat-2 mission is to track changes in the thickness and elevation of ice sheets around the world. The measurements are obtained using a laser altimeter, and elevation is calculated to an accuracy of 25 millimeters. 

The satellite measured seasonal water levels in more than 227,000 lakes, ponds, and reservoirs worldwide from October 2018 to July 2020. The water bodies ranged in size from the American Great Lakes to ponds with areas less than one tenth of a square mile. 

The study revealed that while natural lakes and ponds varied seasonally by an average of .22 meters, human-managed reservoirs varied by .86 meters. This means that, when compared to natural lakes, reservoirs account for 57 percent of the total variation. 

Human influence on freshwater resources was found to beP even stronger in arid regions like the Middle East, American West, India and Southern Africa, where seasonal variability attributed to human activity exceeds 90 percent.

"Of all the volume changes in freshwater bodies around the planet - all the floods, droughts and snowmelt that push lake levels up and down - humans have commandeered almost 60% of that variability," said study co-author Professor Laurence Smith. 

"That's a tremendous influence on the water cycle. In terms of human impact on the planet, this is right up there with impacts on land cover and atmospheric chemistry."

Video Credit: NASA Goddard

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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

Human impact on Earth's freshwater resources revealed

Human impact on Earth's freshwater resources revealed Today's Video of...

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The Vatnajökull ice cap in southeast Iceland Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features a Copernicus Sentinel-2 view of the Vatnajökull ice cap in southeast Iceland.

Vatnajökull is the biggest glacier in Europe, covering an area of more than 3,200 square miles. 

The ice cap has about 30 outlet glaciers, many of which are shrinking as a result of rising temperatures. One of these glaciers, Vatnajökull, is positioned over some of the most active volcanoes in Iceland such as Bárðarbunga and Grímsvötn.

On the southern side of Vatnajökull, the Jökulsárlón glacial lake has grown to become Iceland's deepest lake. Because it connects with the ocean, the lake contains both seawater and freshwater. 

The island was governed as an independent commonwealth under the Althing, therefore being  of the world's oldest functioning legislative assemblies. Also there is  a period of civil strife, Iceland acceded to Norwegian rule in the 13th century. The establishment of the Kalmar Union in 1397 united the kingdoms of Norway, Denmark, and Sweden. Iceland also followed Norway's integration into that union, coming under Danish rule after Sweden's secession from the union in 1523.  The capital and largest city is Reykjavík

Video 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

The Vatnajökull ice cap in southeast Iceland

The Vatnajökull ice cap in southeast Iceland Today's Video of...

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The Galápagos Islands in the eastern Pacific Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the Galápagos Islands, a volcanic archipelago in the Pacific Ocean. This region is one of the most famous places on the planet for viewing wildlife.

The Galápagos Islands are home to many native plants and animals that cannot be found anywhere else in the world, including giant tortoises and sea lions. 

When Charles Darwin visited the islands in 1835, his wildlife observations inspired the theory of evolution by natural selection. In 1959, the Ecuadorian government made the entire archipelago a national park to protect its unique diversity. 

The archipelago is made up of 13 major islands and several smaller islands and islets across 60,000 square kilometers of ocean. According to ESA, repeated volcanic eruptions and ongoing seismic activity have helped form the rugged mountain landscape of the islands. The older names remained in use in English-language publications, including Herman Melville's The Encantadas of 1854.  Therefore Galapagos owns one of the provinces of Ecuador, made up of three cantons that consist  the names of its most populated islands, which are San Cristóbal, Santa Cruz and Isabela. 

The largest of the Galapagos Islands, Isabela, was formed when multiple Volcanism has been continuous on the Galápagos Islands for at least 20 million years, and possibly  even longer. The mantle plume beneath the east side of volcanoes merged into one single land mass. The Galápagos Archipelago is characterized by large contemporaneous volcanoes, some with plume magma sources, others from the <a title="Asthenosphere" href="https://en.wikipedia.org/wiki/Asthenosphere">asthenosphere</a>, 

Video Credit: European Space Agency 

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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

The Galápagos Islands in the eastern Pacific

The Galápagos Islands in the eastern Pacific Today's Video of...

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Satellites help keep people safe from algae blooms Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes how satellites are helping scientists monitor recreational sites for potentially harmful algae blooms.

Kate Fickas of Utah State University uses satellite images to make sure the water is safe for people and pets.

“I grew up swimming in the Willamette River in Oregon, and diving in lakes over the summer,” said Fickas. “So it means a lot to me that I’m able to not only help develop algorithms for monitoring cyanobacteria blooms, which is interesting in itself, but to be able to take that next step and keep the public safe, and allow them to safely recreate and enjoy the water the way that I do.”

Blooms occur when the populations of algae, phytoplankton, and cyanobacteria explode in numbers as a result of warm temperatures and excessive nutrients.

Fickas noted that many water bodies in Utah meet those conditions, especially with warming temperatures due to climate change, as well as nutrient runoff from agricultural fields and other sources.

Satellites such as Landsat 8 can detect when a lake changes color due to outbreaks of algae. 

Video Credit: NASA Goddard 

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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 help keep people safe from algae blooms

Satellites help keep people safe from algae blooms Today's Video...

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Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features a satellite view of the Amazon River in the rainforest of South America.

The Amazon River flows more than 4,000 miles from the Andes to the Atlantic Ocean on the northeast coast of Brazil, passing through six countries along the way.

The Amazon is considered the widest river in the world, as well as the largest drainage system, with more than 1,100 tributaries.

These rivers provide a range of habitats for various types of wildlife, including swamps, marshes. and streams.

According to WWF, it is estimated that approximately one-sixth of all the freshwater that drains into the world's oceans goes through the Amazon delta, where the river meets the Atlantic Ocean.

Video 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

The Amazon River in South America

Today's Video of the Day from the European Space Agency...

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Valentine Island in western Australia Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Valentine Island off the coast of western Australia.

The tiny island is located in the King Sound, a large gulf and inlet of the Indian Ocean.

According to the<a href="https://www.bing.com/search?q=nasa&amp;cvid=43697a2372814c2aaef744253b1c12a9&amp;aqs=edge.0.69i59l2j0l4j69i60l3.598j0j4&amp;FORM=ANAB01&amp;PC=HCTS"> ESA</a>, the King Sound has one of the highest tides in Australia, reaching a maximum tidal round of around 11 to 12 meters. 

The port town of Derby can be found on the eastern shore of the King Sound near the mouth of the Fitzoy River. This area of Australia's Kimberley Region is known for having a coast lined with mangroves that support an abundance of wildlife including birds and fish. 

The first <a href="https://www.earth.com/video/europeans-are-widely-supportive-of-space-exploration/">Europeans</a> to visit Western Australia consisted of the Dutch Dirk Hartog expedition, who also  visited the Western Australian coast in 1616. Therefore the  first European settlement of Western Australia occurred following the landing by Major Edmund Lockyer on 26 December 1826. Also the Valentine Island in western Australia  defines the border with South Australia and the Northern Territory surrounded by the Indian Ocean. The total length of the state's eastern border is 1,862 km

Video 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

Valentine Island in western Australia

Valentine Island in western Australia Today's Video of the Day...

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Today's Video of the Day from <a href="https://www.qut.edu.au/">Queensland University of Technology</a> describes how pumice helped solve the mystery of what killed millions of shearwater birds in 2013. 

The team found evidence that migrating seabirds are eating materials that are not even food, including pumice stones, because they are starving.

Study lead author Dr. Lauren Roman is a researcher at Australia's national science agency CSIRO. She said there was much discussion in the scientific community about the causes of mass mortality of seabirds which are often found with plastic and other non-food items in their stomach.

"We found that in the instance of the shearwater bird deaths in 2013, these birds were starving, and in their starved state had reduced prey discrimination," said Dr. Roman.

"Our study investigates the chicken-and-egg dilemma - do animals starve from eating non-food or do animals eat non-food because they are starving?""

Seabirds are indicator species that can be used to monitor the health of marine ecosystems. Mass mortalities are often indicative of changing food webs and ecological conditions.

The study was focused on short-tailed shearwaters, which migrate from Australia to the North Pacific in April and return late in the year. Among 172 deceased seabirds that were recovered from the New South Wales and Queensland, 96.7 percent had ingested pumice or plastic.

The researchers used satellite systems to track the 2013 shearwater migration and compared the data to locations of a large pumice raft produced by a large volcanic eruption north of New Zealand in 2012.

"We proposed that a short time period between non-food ingestion and death would indicate that birds were already starving at the time of non-food ingestion, and a starving state would be reflected by poor body condition and reduced muscle mass," explained study co-author Professor Scott Bryan, who has been studying pumice rafts for over 20 years.

"Death after a longer period would indicate that birds starved following ingestion of non-food."

Professor Bryan said detailed information about the route of the pumice raft was an integral part to determining the answer of where the birds had consumed the pumice.

"We combined the tracking information data of the short-tailed shearwaters, using location tags on migrating birds, and the geological signature of the ingested pumice."

"By October 2013 when the shearwaters were returning to Australia on their annual migration from the North Pacific, the floating pumice was now located along their flight path as they approached Australia."

Once the experts had established when the birds ate the pumice, and their physical condition at the time, they were able to conclude that the birds were already starving when they ate the pumice. Furthermore, the study revealed that the seabirds had ingested the pumice about 12 to 41 hours before death.

"With a projected increase in challenging times for wildlife because of threats such as climate change, marine pollution and over exploitation of resources, this study has implications for mass mortalities and exacerbation of existing threats to marine species," said Dr. Roman.

Video Credit: Queensland University of Technology 

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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

Pumice solved the mysterious deaths of seabirds

Today's Video of the Day from Queensland University of Technology...

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Pelicans use wind from ocean waves to save energy Today's Video of the Day from <a href="https://ucsd.edu/">UC San Diego</a> describes how pelicans seem to effortlessly glide along the crests of ocean waves close to shore.

The experts found that pelicans use wind updrafts generated by the waves to conserve energy as they fly. This technique is known as wave-slope soaring.

"There's a community of biologists and ornithologists that studies the metabolic cost of flight in birds that can use this and see how their research connects to our estimates from theory," said study lead author Ian Stokes.

"Likewise, our model generates a basic prediction for the winds generated by passing swell, which is important to physicists that study how the ocean and atmosphere interact in order to improve weather forecasting."

"This is an interesting project because it shows how the waves are actually moving the air around, making wind," said Professor Professor Drew Lucas. 

"If you're a savvy bird, you can optimize how you move to track waves and to take advantage of these updrafts. Since seabirds travel long distances to find food, the benefits may be significant." Therefore Pelicans use wind from ocean waves to save energy.

Video Credit: UC San Diego 

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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

Pelicans use wind from ocean waves to save energy

Pelicans use wind from ocean waves to save energy Today's...

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Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the Arctic region of Lapland, which is known for its vast wilderness, ski resorts, and natural wonders such as the Northern Lights.

Lapland is Finland’s northernmost region, and borders Sweden, Norway, Russia, and the Baltic Sea. It is also bound by the Norwegian Sea on the west, the Barents Sea on the north, and the White Sea to the east.

In the winter months, Lapland has temperatures of below zero and the Northern Lights, or the Aurora Borealis, can he viewed in the night sky. 

The capital of Lapland, Rovaniemi, is considered the official hometown of Santa Claus. Here, the Arctic Circle runs through Santa Claus Village, which is located eight kilometers north of the city center. 

Finland is one of the places in the Arctic Circle where you can experience the Midnight Sun, or 24 hours of sunshine in the summer, and the Polar Night, when the sun does not appear in the winter.

Video 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

The northern European region of Lapland

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Rice roots use a spiraling strategy to become established Today's Video of the Day from <a href="https://duke.edu/">Duke University</a> describes a strategy used by rice plants that grow their roots in a spiraling pattern for a greater chance of becoming established.

The researchers set up a camera on rice seeds sprouting in clear gel to examine how the roots burrow into the soil. A new picture was captured every 15 minutes for several days after germination.

The team discovered that rice roots use a trick to gain a foothold in the soil by making corkscrew-like motions with the tips of their roots. 

Sprouting seeds face the challenge of anchoring the plant and moving downwards to suck up the water and nutrients the plant needs to grow. The genes governing root meristem activity also constitute promising targets for adapting root growth to different soil stress conditions.

According to the researchers, the spiral growth of root tips is a strategy that rice plants use to grow in hard, compacted soil. Rice is distinct from other crops as it is cultivated in flooded paddy soils over most growth stages. In flooded paddy soils, O 2 is secreted through the aerenchyma of rice roots leading to oxic zones around the roots. 

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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

Rice roots use a spiraling strategy to become established

Rice roots use a spiraling strategy to become established Today's...

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Astronauts share stunning views of the northern lights Today's Video of the Day from the <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> features the northern lights over Canada captured by astronauts on September 28, 2017. The video is a time-lapse of nearly 1,000 still frames shot over a span of 15 minutes.

At the time the photographs were taken, the International Space Station was passing from the northwestern region of the United States toward the southeast.

“The time-lapse imagery that we’ve been able to get of auroras is just fascinating to watch,” said Will Stefanov, ISS program scientist for Earth observations at Johnson Space Center. “And just strikingly beautiful to be able to see that process, how the aurora shifts and moves like a live thing. And knowing that for that particular stretch of time, you are pretty much seeing what the crew saw in orbit.”

Just about a week prior to the time-lapse footage, astronaut Randy “Komrade” Bresnik had captured a spectacular photograph of the aurora borealis as the space station passed over Ontario, Canada. Auroras are the result of disturbances in the magnetosphere caused by solar wind. Therefore these disturbances chanhe the trajectoriy of charged particles in the magnetospheric plasma. These particles, such as electrons and protons, precipitate into the upper atmosphere (thermosphere/exosphere). The resulting ionization and excitation of atmospheric constituents emit light of different color and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the precipitating particles.

Video Credit: NASA Earth Observatory 

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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

Astronauts share stunning views of the northern lights

Astronauts share stunning views of the northern lights Today's Video...

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How land subsidence contributes to sea level rise Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes how land subsidence alters the shape of ocean basins and contributes to sea level rise. 

During the last ice age about 20,000 years ago, the northeastern region of the United States, <a href="https://www.earth.com/image/mistastin-lake-in-labrador-canada/">Canada,</a> and other regions were weighed down by ice sheets. When the ice melted and its weight was lifted, the land surface slowly rebounded. 

The resulting land movement, as well as subsidence related to human activities, play a significant role in sea level rise. For example, the Mississippi River Delta is essentially drowning as sinking ground is combined with higher sea levels, according to NASA. Also in substances can occur in various ways during an earthquake. Broad areas of land can subside drastically during an earthquake because of offset along fault lines. Land subsidence can also occur as a result of settling and compacting of unconsiderate sediment from the shaking of an earthquake. The blunder occur, absolute subsidence may occur in the hanging wall of normal faults. As the cumulative moisture deficit is reversed, which can last up to 25 years, the surface level around the tree will rise and expand laterally.

Video Credit: NASA Goddard 

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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

How land subsidence contributes to sea level rise

How land subsidence contributes to sea level rise Today's Video...

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Forests are becoming younger and smaller Today's Video of the Day from the <a href="https://www.energy.gov/">U.S. Department of Energy</a> describes how climate change is transforming the world's forests. 

The researchers analyzed satellite data and found that the global average tree size has declined over the last century. 

<a href="https://www.earth.com/image/landslides-erupt-after-haitis-deadly-earthquake/">Earth's</a> trees are also becoming increasingly younger, which is due to a higher rate of tree mortality that is linked to global warming and other factors.

"Unfortunately, mortality drivers like rising temperature and disturbances such as wildfire and insect outbreaks are on the rise and are expected to continue increasing in frequency and severity over the next century," explained study lead author Dr. Nate McDowell.

"So, reductions in average forest age and height are already happening and they're likely to continue to happen." Forests are the predominant terrestrial <a title="Ecosystem" href="https://en.wikipedia.org/wiki/Ecosystem">ecosystem</a> of Earth, and are distributed around the globe. Therefore there is more than half of the world’s forests that can be  found in only five countries (Brazil, Canada, China, Russian Federation and United States of America). The largest part of the forest (45 percent) is found in the tropical domain (Tropical forests), followed by the boreal, temperate and subtropical domains.

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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

Video Credit: DOE Pacific Northwest National Laboratory

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Forests are becoming younger and smaller

Forests are becoming younger and smaller Today's Video of the...

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The Egyptian resort town of Sharm El Sheikh Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> (ESA) provides a glimpse of the famous coastal resort town of Sharm El Sheikh in Egypt.

Located on the southern tip of the Sinai Peninsula in between the desert and the Red Sea, this region was a vacation destination for ancient Romans and Greeks all the way back to the 4th century B.C.

Divers are attracted to Sharm El Sheikh to explore the diverse marine life found in the <a href="https://www.earth.com/news/corals-in-the-northern-red-sea-can-resist-global-warming/">Red Sea,</a> including hundreds of coral reefs. Ras Muhammad National Park one of the most popular diving destinations in the region, with its clear warm water and breathtaking desert landscape.

The Authorities in Egypt announced earlier this week that the completion of the wall is encircling the Red Sea resort town of Sharm El Sheikh in South Sinai, according to a statement made by Tamer Makram, the head of the South Sinai Investors, to Youm7. The attack took place on Egypt's Revolution Day, a public holiday in Egypt, and was part of a strategy of hurting Egypt's economy by disrupting tourism, a major industry.

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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

Video Credit: European Space Agency

The Egyptian resort town of Sharm El Sheikh

The Egyptian resort town of Sharm El Sheikh Today's Video...

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Jaguars will soon be severely threatened Today's Video of the Day from the <a href="https://en.wikipedia.org/wiki/Queensland_University_of_Technology">Queensland University of Technology</a> describes how climate change may impact the jaguar, the dominant predator of Central and South America.

According to the research, jaguars in the Peruvian Amazon will be able to handle climate change in the short-term, but could become severely threatened as extreme weather events increasingly interfere with food resources.

“Estimates of jaguar numbers are difficult to achieve because the big cats are cryptic by nature, are not always uniquely identifiable, and their habitat can be hostile to humans,” explained study co-author Professor Kerrie Mengersen.

The investigation was focused on data from a 2016 expedition to the Pacaya Samiria Reserve, which covers 20,800 square kilometers in the Loreto region of the Peruvian Amazon. 

Professor Kevin Burrage explained that the predicted outcomes for the jaguars were concerning in the long-term. 

“Our results imply that jaguars can cope with extreme drought and flood, but there is a very high probability that the population will crash if the conditions are repeated over short time periods. These scenarios are becoming more likely due to climate change,” said Professor Burrage.

“The declines may be further exacerbated by hunting of both jaguars and their prey, as well as loss of habitat through deforestation.”

Video Credit: QUT Media

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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

Jaguars will soon be severely threatened

Jaguars will soon be severely threatened Today's Video of the...

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Today's Video of the Day from the <a href="https://www.jpl.nasa.gov/">NASA Jet Propulsion Laboratory</a> describes what stargazers can see in the sky this month. 

In early March, two reddish objects will line up with Mars: the stars Aldebaran, which forms the angry eye of Taurus the bull, and Betelgeuse, the shoulder of Orion. 

This Friday morning, look for the bright star Antares about 8 degrees below the waning gibbous Moon. In addition, Mercury and Jupiter and Mercury will appear at their closest to each other as morning twilight begins.

On Tuesday, March 9, the waning crescent Moon and the planets Saturn, Jupiter, and Mercury will appear near the horizon as morning twilight begins.

The first day of Daylight Savings Time falls on Sunday, March 14, 2021. Also beginning on this day, a "Wet Moon" or a "Cheshire Moon" will be visible for a few nights. This is when the thin, waxing crescent Moon appears to look like a smile in the evening sky.

On Friday night, March 19, the waxing crescent Moon will form a triangle with Mars and the bright star Aldebaran. This event will be followed by the astronomical end of winter on Saturday, March 20 at 5:37 a.m. EDT.

Also, be sure to look for Venus on March 26 and the full Moon on March 28.

Video Credit: NASA Jet Propulsion Laboratory 

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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

NASA skywatching tips for March 2021

Today's Video of the Day from the NASA Jet Propulsion...

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Vancouver, British Columbia Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Vancouver, a busy seaport on the west coast of British Columbia.
Vancouver is one of Canada's most densely populated and ethnically diverse cities, and is also known for being eco-friendly. 
Officials have developed a plan to make Vancouver "the greenest city in the world." The project involves improving air quality, constructing greener buildings, reducing CO2 emissions, and reducing traffic by promoting cycling, walking, and public transportation use.
The city takes its name from George Vancouver, who explored the inner harbour of Burrard Inlet in 1792 and gave various places British names. The family name "Vancouver" itself originates from the Dutch "van Coevorden", denoting somebody from the city of Coevorden, Netherlands. The explorer's ancestors came to England "from Coevorden", which is the origin of the name that eventually became "Vancouver".
The indigenous Squamish people who reside in a region that encompasses southwestern British Columbia including this city gave the name K'emk'emeláy̓ which means "place of many maple trees"; this was originally the name of a village inhabited by said people where a sawmill was established by one Captain Edward Stamp as part of the foundations to the British settlement later becoming part of Vancouver
Vancouver is already one of the most sustainable cities on the planet, with 95 percent of its electricity coming from renewable energy sources. 
Video 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

Vancouver, British Columbia

Vancouver, British Columbia Today's Video of the Day from the...

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Today's Video of the Day from <a href="https://www.aalto.fi/en">Aalto University</a> describes how screen time improves the lives of saki monkeys in captivity. 

In collaboration with Korkeasaari Zoo, the researchers built an on-demand video device for white-faced saki monkeys to activate whenever they want. 

"We were very much interested in how we can give animals control over their environment and especially how they can control technology," said study lead author Ilyena Hirskyj-Douglas.

"Typically, when we use technology with animals, we use it on them, so we play them sounds or video, rather than giving them the option of controlling the technology themselves."

The device played five different kinds of scenes: marine life such as jellyfish, wiggly worms, zoo animals like zebras, makis and dear, abstract art, or lush forests.

"We got interesting results. First of all, we learned that the monkeys do pay attention to the screen; they watch it and touch it. We also suspect they recognize objects on the screen. One of the videos we had featured meal worms - an everyday meal for them. They actually tried to lick the screen and even went around the tunnel to see if the worms were behind it," said study co-author Vilma Kankaanpää.

The saki monkeys scratched themselves significantly less often when they were offered on-demand videos. For monkeys in captivity, scratching can be a sign of stress.

Video Credit: Aalto University 

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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

Saki monkeys benefit from screen time

Today's Video of the Day from Aalto University describes how...

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Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the world’s largest river delta, the Ganges Delta, which covers an area of around 100,000 square kilometers.

The delta is primarily formed by the Ganges and Brahmaputra rivers, both of which are visible in the image. The snow-covered Himalayas mountains can also be seen in the top of the photograph.

The Ganges river flows for over 2,400 kilometers from the Himalayas to the Bay of Bengal. The river carries fertile soil and nutrients and deposits them across its vast delta floodplain. 

Video Credit: European Space Agency 

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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

The world's largest river delta

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Today's Video of the Day from the <a href="https://eros.usgs.gov/image-gallery/image-of-the-week">USGS</a> shows how one of the worst natural disasters in history reshaped the coast of Sumatra, Indonesia. 

In December of 2004, an earthquake off the coast of northern Sumatra was so intense that it lifted the seafloor several meters and sent tsunami waves in every direction. The 9.1-magnitude Indian Ocean Earthquake ranks as the third must powerful on record. 

Waves that reached the coast of Sumatra were as high as 30 meters. Landsat images show where the vegetation was completely stripped away along the coast, as well as the recovery in the years that followed. 

Video Credit: USGS

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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

Indian Ocean tsunami reshaped the coast of Sumatra

Today's Video of the Day from the USGS shows how...