Since 1990, childhood obesity has significantly increased on all continents, nearly doubling in prevalence. Although the United States currently has the highest prevalence, many other nations are not very far behind.



<h2 class="wp-block-heading" id="h-childhood-obesity-worldwide-nbsp">Childhood obesity worldwide&nbsp;</h2>



For instance, in Southern European countries such as Greece, Italy and Spain, 10 to 15 percent of children are obese, and, although Eastern European countries have for the moment slightly lower rates, they are experiencing a rapid surge which may soon match Southern Europe.&nbsp;



At a global level, Asia has almost half of all overweight children under five, while Africa has one-quarter of such children. Finally, in Latin America, nearly 20% of children under 20 are overweight.&nbsp;



And sadly, a great number of developing countries currently face not only the challenge of&nbsp; overweight/obesity in their children, but also malnutrition.



<h2 class="wp-block-heading" id="h-epidemic-levels-of-childhood-obesity-nbsp">Epidemic levels of childhood obesity&nbsp;</h2>



This obesity epidemic leads to a variety of health issues, including childhood <a href="https://www.earth.com/news/high-blood-pressure-drug-called-rilmenidine-dramatically-slows-aging-in-animals/" target="_blank" rel="noreferrer noopener">hypertension</a> and <a href="https://www.earth.com/news/high-blood-pressure-drug-called-rilmenidine-dramatically-slows-aging-in-animals/" target="_blank" rel="noreferrer noopener">type 2 diabetes</a>.&nbsp;



Recently, a team of scientists led by <a href="https://www.fau.edu/" target="_blank" rel="noreferrer noopener">Florida Atlantic University</a> (FAU) has discussed these challenges and provided possible solutions in a commentary published in the <a href="http://dx.doi.org/10.1007/s10995-024-04001-6" target="_blank" rel="noreferrer noopener">The Maternal and Child Health Journal</a>.



Study lead author Charles H. Hennekens is a professor of medicine and preventive medicine at FAU.&nbsp;



“Pediatric overweight and obesity have reached epidemic levels in the U.S. and are becoming a pandemic globally. These conditions lead to high blood pressure, type 2 diabetes and lipid disorders, which contribute to metabolic syndrome,” said Hennekens.



“In adults, these issues significantly increase the risks of heart attacks, stroke, liver disease, obstructive sleep apnea, arthritis and certain cancers - many of which are now occurring at younger ages.”



Hennekens noted that through coordinated clinical and public health efforts, we can address these troubling trends and work toward a healthier future for children and families globally.



<h2 class="wp-block-heading" id="h-misconceptions-about-childhood-obesity-nbsp">Misconceptions about childhood obesity&nbsp;</h2>



In the United States, a preschooler is considered overweight if their <a href="https://www.earth.com/news/weight-and-bmi-do-not-accurately-reflect-a-persons-health/" target="_blank" rel="noreferrer noopener">body mass index</a> (BMI) surpasses the 85th percentile.&nbsp;



Previous research has shown that such children are at a significantly higher risk of being overweight in their adolescence than those with a BMI at the 50th percentile. This highlights the current misconception that children can simply “outgrow” overweight problems.



<h2 class="wp-block-heading" id="h-boosting-daily-activity-among-children-nbsp">Boosting daily activity among children&nbsp;</h2>



According to the experts, health care providers and public health practitioners face great challenges in their attempts to boost daily <a href="https://www.earth.com/news/any-type-of-physical-activity-can-help-protect-the-brain/" target="_blank" rel="noreferrer noopener">physical activity</a> among children, which could significantly increase metabolic rates, lower BMI, and reduce risks of coronary heart disease later in life.



“With declining physical education in schools and excessive time spent on electronic devices, many children fail to meet recommended activity guidelines,” said co-author Panagiota “Yiota” Kitsantas, the chair of FAU’s Department of Population Health and Social Medicine.&nbsp;



“This sedentary behavior contributes to overweight and obesity through poor diet, reduced sleep, and decreased physical activity. Encouraging organized, enjoyable activities rather than competitive ones can help children achieve necessary physical activity levels.”



<h2 class="wp-block-heading" id="h-contributing-factors-to-childhood-obesity-nbsp">Contributing factors to childhood obesity&nbsp;</h2>



However, the scientists warn that while increasing the amount of physical activity among children is necessary, it is far from sufficient to have a large impact on the rates of childhood overweight and obesity. 



This is due to the fact that other major contributors are the increase of foods containing high quantities of sugars, together with the consumption of ultra-processed foods.



“Nearly 70 percent of the average U.S.-based child’s diet is made up of ultra-processed foods,” Hennekens said. “Moreover, consumption of ultra-processed foods among children under 24 months is rising worldwide, triggering not only the potential of developing obesity but also decreased immunological protection.”



<h2 class="wp-block-heading" id="h-the-role-of-ultra-processed-foods-nbsp">The role of ultra-processed foods&nbsp;</h2>



Although further research is needed to clarify which components of ultra-processed foods lead to weight gain in children, it is already clear that a diet high in such foods is connected to increasing rates of overweight and obesity.



“Evidence suggests that enhancing school lunch nutritional standards could help reduce obesity, particularly among low-income children,” Kitsantas said.&nbsp;



“We recommend adopting school food policies that remove ultra-processed foods from menus and promote healthier alternatives, alongside educational programs on healthy eating, despite the challenges posed by external influences on children.”



<h2 class="wp-block-heading" id="h-public-health-measures-nbsp">Public health measures&nbsp;</h2>



Some of these challenges include the use of social media and advertising, which affects children’s food choices and behaviors such as sharing unhealthy food posts.



“Despite recommendations from the World Health Organization and public health authorities to restrict food marketing aimed at children, few countries have implemented such measures,” Hennekens explained.&nbsp;



“The effectiveness of existing regulations in today’s media landscape is uncertain, creating an opportunity for health providers and public health practitioners to educate families about the impact of this advertising.”



<h2 class="wp-block-heading" id="h-managing-the-public-health-crisis">Managing the public health crisis </h2>



The scientists argue that tackling the rising pediatric obesity epidemic requires a multidimensional approach. In 2023, the American Academy of Pediatrics endorsed World Health Organization’s guidelines, while releasing their own recommendations for managing this public health crisis.&nbsp;



The guidelines suggest that healthcare providers and public health professionals address the social determinants of health, utilize motivational interviewing to encourage changes in nutrition and physical activity habits, and consider options like pharmacotherapy or surgery to achieve individualized patient objectives.



<h2 class="wp-block-heading" id="h-reversing-the-troubling-trends">Reversing the troubling trends</h2>



Yet, the study authors argue that although there are approved drug therapies available, maternal and child health care providers should employ therapeutic lifestyle changes before prescribing pharmaceutical interventions.



“While the ultimate goal is prevention of pediatric overweight and obesity as well as metabolic syndrome, to paraphrase Voltaire, we should not ‘let the perfect be the enemy of the good,’” Hennekens said.



“Health care and public health professionals must collaborate across disciplines to address these issues with patients, families, communities and policymakers. United efforts can help reverse these troubling trends and ensure a healthier future for children worldwide,” Kitsantas concluded.



-----



Like what you read? <a href="https://www.earth.com/subscribe/" target="_blank" rel="noreferrer noopener">Subscribe to our newsletter</a> for engaging articles, exclusive content, and the latest updates.



Check us out on <a href="https://www.earth.com/earthsnap/" target="_blank" rel="noreferrer noopener">EarthSnap</a>, a free app brought to you by <a href="https://www.linkedin.com/in/eric-ralls/" target="_blank" rel="noreferrer noopener">Eric Ralls</a> and Earth.com.



-----

Childhood obesity rates are surging worldwide

Since 1990, childhood obesity has significantly increased on all continents, nearly doubling in prevalence. Although the United States currently has the highest prevalence, many other nations are not very far behind. Childhood obesity worldwide&nbsp; For instance, in Southern European countries such as Greece, Italy and Spain, 10 to 15 percent of children are obese, and, although Eastern European countries have for the moment slightly lower rates, they are experiencing a rapid surge which may soon match Southern Europe.&nbsp; At a global level, Asia has almost half of...

Experts at the <a href="https://www.hss.edu/">Hospital for Special Surgery</a> (HSS) in New York City have found that practices such as meditation and mindful breathing can help patients manage chronic pain. In some cases, patients engaging in these activities were able to skip their medication, including opioids.

Maggie Wimmer is the coordinator of Programs and Outcomes and Public and Patient Education at HSS.

“Opioid misuse and addiction are a major public health issue in the United States, and approximately 70 percent of individuals who use opioids on a long-term basis have a musculoskeletal disorder, such as low back pain or arthritis,” said Wimmer. “To address this epidemic, Hospital for Special Surgery implemented a Pain and Stress Management program in its orthopedic clinic to enhance patient knowledge and encourage complementary practices as alternatives to medication.”

HSS launched the program in 2017 for patients in the hospital's Ambulatory Care Center, which serves a diverse, low income community of individuals living with chronic musculoskeletal conditions. The program featured a monthly workshop, led by a <a href="http://www.earth.com/news/transcendental-meditation-mental-health-productivity/">meditation</a> instructor and a social worker, where participants engaged in mindful breathing techniques and meditation to manage chronic pain and stress.

Researchers evaluated the program by surveying participants after each monthly meeting. Overall, 98 percent of patients either agreed or strongly agreed that they were satisfied with the program, while 95 percent said the program increased their understanding of how to manage pain and stress. In addition, 93 percent of the participants said that they would recommend the program to others.


The study also revealed that one out of three participants used the meditation techniques in place of their medication five or more times in the week prior to being surveyed. Over half of the patients reported that mindful breathing helped them manage their chronic pain and stress.


According to the social worker, many participants experienced improved daily function, calmness, and improved state of mind after practicing the meditation techniques.

Robyn Wiesel is the associate director of Public and Patient Education at HSS.

“The results indicate that alternative approaches are effective in reducing pain and stress, and in improving self-management and general well-being,” said Weisel. “Based on the success of the Pain and Stress Management program in the orthopedic clinic, it has been expanded to include patients in the HSS Rheumatology Clinic, many of whom rely on opioid medication to manage chronic pain.”

The research was presented at the American College of Rheumatology/Association of Rheumatology Health Professionals annual meeting on October 24 in Chicago.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Meditation helps patients manage chronic pain and stress

Experts at the Hospital for Special Surgery (HSS) in New...

Fruits and vegetables linked to lower risk of memory loss in men. A new study published by the <a href="https://www.aan.com/">American Academy of Neurology</a> has revealed that orange and red vegetables, berry fruits, orange juice, and leafy greens all contribute to a lower risk of memory loss among men.

“One of the most important factors in this study is that we were able to research and track such a large group of men over a 20-year period of time, allowing for very telling results,” said study co-author Changzheng Yuan. “Our studies provide further evidence dietary choices can be important to maintain your brain health.”

The investigation was focused on 27,842 male health professionals with an average age of 51. Over two decades, the men reported every four years on how many servings of fruits, vegetables, and other foods they had each day.

At least four years before the end of the study, the participants were also tested for thinking and <a href="http://www.earth.com/news/stress-affecting-memory/">memory skills</a> using an evaluation that was designed to detect subtle changes that would likely go unnoticed in objective cognitive tests. Any reported changes in memory would be considered precursors to mild cognitive impairment.

Overall, 55 percent of the men had good thinking and memory skills, 38 percent had moderate skills, and 7 percent had poor thinking and memory skills.

The participants were divided into five groups based on their fruit and vegetable consumption. The highest consumption rate of vegetables was about six servings per day, compared to two servings for the lowest. The top group ate about three servings of fruit per day, compared to the lowest rate of half a serving each day.

The study revealed that men who consumed the most vegetables were 34 percent less likely to develop poor thinking skills compared to the group that ate the least vegetables. In addition, men who drank orange juice every day were 47 percent less likely to develop poor thinking skills.

The experts also found that men who ate larger amounts of fruits and vegetables 20 years earlier were less likely to develop cognitive issues, regardless of whether they continued to do so up until the testing took place 16 years later.

The study is published in the journal <a href="http://www.neurology.org/">Neurology</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Fruits and vegetables linked to lower risk of memory loss in men

Fruits and vegetables linked to lower risk of memory loss...

A new study has revealed that humans actually have two internal clocks that are controlled by neural networks in different parts of the brain. Depending on the situation at hand, the appropriate network kicks in to help us anticipate what is about to happen.

According to the researchers, one of our internal clocks bases its timing on past experiences, while the other relies on rhythm. Study lead author Assaf Breska is a postdoctoral researcher in Neuroscience at <a href="https://www.berkeley.edu/">UC Berkeley</a>.

“Whether it’s sports, music, speech or even allocating attention, our study suggests that timing is not a unified process, but that there are two distinct ways in which we make temporal predictions and these depend on different parts of the brain,” said Breska.

The findings are shedding new light on how humans calculate the timing of their actions. 

“Together, these brain systems allow us to not just exist in the moment, but to also actively anticipate the future,” explained study senior author Richard Ivry.

The study was focused on patients with either Parkinson’s disease or cerebellar degeneration. The researchers tested the anticipatory timing skills of the individuals, evaluating both strengths and deficits. 

The experts found a connection between rhythmic timing and the basal ganglia. They connected interval timing, which is based and memories and experiences, to the cerebellum. 

The results of the study suggest that these <a href="http://www.earth.com/news/low-protein-high-carb-diets-aging/">brain</a> regions, which are both associated with movement and cognition, are interchangeable. In other words, one internal clock could kick in if the other was not functioning properly. 

“We show that patients with cerebellar degeneration are impaired in using non-rhythmic temporal cues while patients with basal ganglia degeneration associated with Parkinson’s disease are impaired in using rhythmic cues,” said Ivry.

Breska added, “Our study identifies not only the anticipatory contexts in which these neurological patients are impaired, but also the contexts in which they have no difficulty, suggesting we could modify their environments to make it easier for them to interact with the world in face of their symptoms.”

According to the study authors, the research confirms that two different mechanisms are used by the brain for anticipatory timing, which contradicts theories that there is a single internal clock that guides timing.

“Our results suggest at least two different ways in which the brain has evolved to anticipate the future,” said Breska. “A rhythm-based system is sensitive to periodic events in the world such as is inherent in speech and music. And an interval system provides a more general anticipatory ability, sensitive to temporal regularities even in the absence of a rhythmic signal.”

The study is published in the <a href="http://www.pnas.org/">Proceedings of the National Academy of Sciences</a>

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

The brain uses two different internal clocks to anticipate the future

A new study has revealed that humans actually have two...

Why it gets harder to lie convincingly as you get older. A study from <a href="https://www.brandeis.edu/">Brandeis University</a> is explaining why it may become harder to pull off telling a lie as you get older. According to the researchers, <a href="http://www.earth.com/news/adult-ssedatives-risky-use/">older adults</a> have a more difficult time keeping track of lies because lying requires cognitive control, which declines with age. 

The experts performed brain scans using an electroencephalogram (EEG) on both millennials and elderly individuals while they were instructed to tell the truth or to tell lies. The lies involved describing items that they had never seen before. 

The study revealed that both groups showed similar cognitive responses when telling the truth. On the other hand, the brains of the older adults struggled when they were expected to tell a lie.

“We investigated medial frontal negativity (MFN), an ERP component associated with deception and cognitive control, which may be differentially generated across age groups due to differences in cognitive control,” wrote the study authors. “Unexpectedly, results revealed that older adults showed reduced accurate memory for items to which they previously lied compared to younger adults.”

The results suggest that lying requires significant brain power and cognitive control - competencies that often decline with age. The study findings also indicate that working memory processes play an important role in deception.Why it gets harder to lie convincingly as you get older

“These findings demonstrate that lying is another source of misinformation and influences memory differently across the lifespan,” wrote the researchers.

Even though creating a believable lie was harder for the older adults in the study, the experts pointed out that this may be pulled off a bit more easily by faking memory loss. 

The research is published in the journal <a href="https://www.journals.elsevier.com/brain-and-cognition">Brain and Cognition</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Why it gets harder to lie convincingly as you get older

Why it gets harder to lie convincingly as you get...

Experts are reevaluating the oldest known use of vanilla after finding three jugs in an Israeli tomb that dates back around 3,600 years to the <a href="http://www.earth.com/news/europeans-making-cheese-7000-years/">Bronze Age</a>. Prior to this discovery, the use of vanilla was believed to have originated in Mexico about 1,000 years ago.

According to archaeologist Vanessa Linares of <a href="https://english.tau.ac.il/">Tel Aviv University</a> in Israel, the jugs were found to contain traces of two chemical compounds in natural vanilla extract - vanillin and 4-hydroxybenzaldehyde. Various chemical analyses also detected residues of plant oils, including a compound found in olive oil.

“Bronze Age people at Megiddo may have used vanillin-infused oils as additives for foods and medicines, for ritual purposes or possibly even in the embalming of the dead,” Linares told <a href="https://www.sciencenews.org/">Science News</a>.  

Linares explained that the chemical profile of the vanillin best matches vanilla orchid species that are found today in East Africa, India, and Indonesia. Trade routes used during the Bronze Age likely facilitated the movement of vanillin from India or East Africa to the Middle East. 

Linares described the study findings at the annual meeting of <a href="http://www.asor.org/">American Schools of Oriental Research</a> on November 16 in Denver.

In the presentation, she explained: “Until now it has been commonly accepted that vanilla was domesticated in the New World and subsequently spread to other parts of the globe.”

“Once all possibilities of contamination were ruled out, a post-organic residue analysis investigation of various species within the plant kingdom from which these principle compounds could have been exploited was conducted.”

“These results shed new light on the first known exploitation of vanilla, local uses, significance in mortuary practices, and possible long-distance trade networks in the ancient Near East during the second millennium BC.”
--
By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Human were using vanilla 3,600 years ago, new fossils reveal

Experts are reevaluating the oldest known use of vanilla after...

Climate change could bring an end to the truffle industry. Truffles are a delicacy prized for their unique, musky flavor. But due to their limited growing season, difficulty to cultivate, and rare qualities, truffles are also very expensive. 

Some truffles can cost upwards of $1,500 per pound and the truffle industry is worth millions.

Reports suggest that the truffle industry could soon be worth 4.5 billion UK pounds over the next ten to twenty years, but a new study projects a much grimmer outlook for the world’s <a href="https://www.earth.com/news/market-mushrooms-truffles/">most prized mushroom. </a>

A new study conducted by researchers from the <a href="https://www.stir.ac.uk/">University of Stirling</a> predicts that the truffle industry could all but disappear due to climate change in the next 50 years. 

Climate change will make for hostile conditions for truffles with temperatures expected to increase along with droughts and precipitation expected to decrease. 

If European truffle production is wiped out by climate change, the researchers say it will have a major economic impact. 

“We risk losing an industry worth hundreds of millions of pounds to the economy,” said Paul Thomas, the leader of the study which was published in the journal Science of the Total Environment. “However, the socio-economic impact of the predicted decline could be substantially larger as truffle harvesting, and related activities form a key component of local history and cultural activity.” 

Truffle production could drop by 78 to 100 percent by 2100, according to Thomas. 

“However, the decline may well occur in advance of this date, when other climate change factors are taken into account, such as heatwaves, forest fires, drought events, pests, and disease,” said Thomas.

For the study, the researchers reviewed 36 years of truffle yield records and weather data from France, Spain, and Italy. By comparing yields and weather data, the researchers were able to understand better how climate impacts truffle growth and harvest. 

Next, the researchers used the data to create climate model projections for the future and found climate change could severely decline truffle production in Europe. 

“This is a wake-up call to the impacts of climate change in the not-too-distant future,” said Thomas. “These findings indicate that conservational initiatives are required to afford some protection to this important and iconic species. Potential action could include the expansion of truffle plantations into new territories of a more favorable future climate.”

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>,<a href="https://www.earth.com/"> Earth.com</a> Staff Writer 

Paid for by <a href="https://www.earth.com/">Earth.com</a>

Climate change could bring an end to the truffle industry

Climate change could bring an end to the truffle industry....

A new study by Dr. John Leach, a senior research fellow at the <a href="https://www.port.ac.uk/">University of Portsmouth</a>, has found that people sometimes die from simply giving up. The research is the first to scientifically describe death from “give-up-itis.” 

Technically known as psychogenic death, this condition is characterized by emotional trauma that feels inescapable, which makes <a href="http://www.earth.com/news/heat-related-deaths-skyrocket/">death</a> feel like the only reasonable outcome. 

Dr. Leach explained, “Psychogenic death is real. It isn't suicide, it isn't linked to depression, but the act of giving up on life and dying usually within days, is a very real condition often linked to severe trauma.”


Dr. Leach describes the five stages leading to the psychological decline involved in give-up-itis. He suggests that it could be driven by changes in a frontal-subcortical circuit of the brain, the anterior cingulate circuit, which controls how a person maintains motivation and goal-directed behavior.


“Severe trauma might trigger some people's anterior cingulate circuit to malfunction,” said Dr Leach. “Motivation is essential for coping with life and if that fails, apathy is almost inevitable.”

Even though death from give-up-itis is possible, it is not inevitable and can be reversed by different interventions at various stages. The most common intervention is physical activity, which triggers the release of dopamine. When an individual can find a way to see that a situation is at least partially within their control, this can also trigger a positive chemical response. 

“Reversing the give-up-itis slide towards death tends to come when a survivor finds or recovers a sense of choice, of having some control, and tends to be accompanied by that person licking their wounds and taking a renewed interest in life,” said Dr. Leach.

The first stage of give-up-itis is social withdrawal, which usually happens after a psychological trauma. In this stage, individuals show a marked withdrawal, lack of emotion, indifference, and become self-absorbed.

The second stage is apathy, an emotional or symbolic “death” that has been seen in prisoners of war and in survivors of shipwreck and airplane crashes. It has been described as someone no longer striving for self-preservation. People in this stage are often dishevelled, their instinct for cleanliness is gone, and the smallest of tasks feels overwhelming.

Aboulia is the third stage, which involves a profound lack of motivation combined with a dampened emotional response, a lack of initiative, and an inability to make decisions. 

During this stage of give-up-itis, people often give up bathing or eating. However, they may still be influenced or motivated by others through persuasive nurturing, reasoning, or antagonism.

“An interesting thing about aboulia is there appears to be an empty mind or a consciousness devoid of content,” said Dr. Leach. “People at this stage who have recovered describe it as having a mind like mush, or of having no thought whatsoever. In aboulia, the mind is on standby and a person has lost the drive for goal directed behaviour.”

Psychic akinesia, the fourth stage, is characterized by a further drop in motivation. The person is conscious but in a state of profound apathy, unaware of or no longer sensitive to extreme pain.

Dr Leach describes the final stage, psychogenic death, as the disintegration of a person. “It's when someone then gives up. They might be lying in their own excreta and nothing - no warning, no beating, no pleading can make them want to live.”

The progress from stage four to stage five generally takes three to four days. Shortly before death, there's often a flicker of life, like when someone suddenly enjoys a cigarette.

“It appears briefly as if the 'empty mind' stage has passed and has been replaced by what could be described as goal-directed behavior,” said Dr. Leach. “But the paradox is that while a flicker of goal-directed behavior often takes place, the goal itself appears to have become relinquishing life.”

The study is published in the journal <a href="https://www.journals.elsevier.com/medical-hypotheses">Medical Hypotheses</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Giving up on life can actually lead to death, new study finds

A new study by Dr. John Leach, a senior research...

On a warm summer day, when a piping hot cup of <a href="http://www.earth.com/news/coffee-drinkers-live-longer-lives/">coffee</a> seems unthinkable, there’s nothing better than popping by your local coffee shop for a glass of cold-brew coffee. 

But according to new research, hot brew coffee contains higher levels of antioxidants than cold brew coffee.

Cold brew, a method of soaking ground coffee in cold water overnight, has all the taste and caffeine of your average cup of joe, but can be served over ice and makes for a refreshing change. 

Cold brew has become hugely popular in the United States, and the market for cold brew jumped 580 percent from 2011 to 2016. 

Some people prefer cold brew all year round no matter the weather. It’s claimed that cold brew is less acidic and so coffee drinkers are more inclined to choose cold brew in the hopes of avoiding heartburn or stomach problems. 

With all the measurable success of cold brew, there exist few studies on its health benefits or its supposedly lower acidity.

Researchers from <a href="https://www.jefferson.edu/">Philadelphia University</a> and <a href="https://www.jefferson.edu/">Thomas Jefferson University</a> set out to explore the chemical makeup of cold-brew coffee and conducted a study to see if cold brew had the same beneficial qualities of hot coffee. 

The study was published in the journal Scientific Reports. 

The researchers, who were coffee drinkers themselves, found that cold brew and hot coffee have similar pH levels ranging from 4.85 to 5.13.  However, hot coffee has higher levels of titratable acids. 

Titratable acids may be what increases the antioxidant levels of hot coffee. 

“Coffee has a lot of antioxidants, if you drink it in moderation, research shows it can be pretty good for you,” said  Megan Fuller, a co-author of the study. “We found the hot brew has more antioxidant capacity.”

---

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>,<a href="https://www.earth.com/"> Earth.com</a> Staff Writer

Hot coffee has more antioxidants than cold brew

On a warm summer day, when a piping hot cup...

A new study from the <a href="https://www.mailman.columbia.edu/">Columbia University Mailman School of Public Health</a> suggests that all infectious diseases are seasonal, just like wintertime influenza outbreaks. Dr. Micaela Martinez noted that chickenpox becomes most widespread in the spring, while gonorrhea and polio are most prevalent in the summer. 

For the investigation, Dr. Martinez collected information from the World Health Organization, the U.S. Centers for Disease Control and Prevention, and peer-reviewed publications. Next, she constructed a calendar of epidemics for 69 infectious diseases, from rare tropical diseases to common infections. 


The study revealed that acute infectious diseases like the <a href="http://www.earth.com/news/washing-hands-flu-season/">flu</a> are not the only conditions that can be seasonal. Chronic infectious diseases like Hepatitis B can also be expected at certain times of the year. 

The results of preliminary studies have shown that even HIV-AIDS has a seasonal element, which is believed to be driven by seasonal changes in malnutrition and agriculture. 

The researchers have identified four main drivers of seasonality in infectious diseases, including temperatures and other environmental factors, host behaviors such as children going to school, and seasonal biological rhythms. Finally, ecological factors such as algae play a role the outbreak of cholera.

[caption id="attachment_1861724" align="aligncenter" width="700"]<a href="https://www.earth.com/wp-content/uploads/2018/11/flu.jpg"><img class="wp-image-1861724" src="https://www.earth.com/wp-content/uploads/2018/11/flu-1024x431.jpg" alt="" width="700" height="295" /></a> Image Credit: Columbia Mailman School of Public Health[/caption]

“Seasonality is a powerful and universal feature of infectious diseases, although the scientific community has largely ignored it for the majority of infections,” said Dr. Martinez. “Much work is needed to understand the forces driving disease seasonality and understand how we can leverage seasonality to design interventions to prevent outbreaks and treat chronic infections.”

Identifying the drivers of seasonal outbreaks is not always straightforward, but can really pay off. For example, the bacteria that cause cholera, which spread to humans by fecal-oral transmission, can be maintained in water supported by algae. 

Public health officials may develop an intervention to prevent the transmission of cholera from infected individuals, or to target the bacteria surviving in algal-filled waterbodies. However, the key season to employ each of these interventions would likely be different. 

The study is published in the journal <a href="https://journals.plos.org/plospathogens/">PLOS Pathogens</a>. 

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

The timing of all infectious diseases may be seasonal

A new study from the Columbia University Mailman School of...

Eating <a href="http://www.earth.com/news/nuts-improve-male-fertility/">nuts</a> on a daily basis may prevent weight gain and provide cardiovascular health benefits, according to the results of two separate studies. In one investigation, the researchers analyzed how eating nuts may influence the long-term body weight of men and women in the United States. The second study examined whether eating Brazil nuts could increase a sense of fullness and improve glucose and insulin responses. 

For the first study, participants reported on their nut consumption every four years in three different groups involving 25,394 men in the Health Professionals Follow-up Study, 53,541 women in the Nurse’s Health Study, and 47,255 women in the Nurse's Health Study II.

Over the four-year intervals, replacing foods  that were lacking in nutritional value with a single one-ounce serving of nuts was associated with a lower risk of obesity.


Study first author Dr. Xiaoran Liu is a research associate in the nutrition department of the <a href="https://www.hsph.harvard.edu/">Harvard School of Public Health</a>.

“People often see nuts as food items high in fat and calories, so they hesitate to consider them as healthy snacks, but they are in fact associated with less weight gain and wellness,” said Dr. Liu. “Once people reach adulthood, they start to gradually gain about one pound a year of weight, which seems small. But if you consider gaining one pound over 20 years, it accumulates to a lot of weight gain.” 

“Adding one ounce of nuts to your diet in place of less healthy foods - such as red or processed meat, French fries or sugary snacks - may help prevent that slow, gradual weight gain after you enter adulthood and reduce the risk of obesity-related cardiovascular diseases.”

In the Brazil nut study, 22 healthy adults with an average body mass index of 22.3 consumed either 36 grams of pretzels or 20 grams of Brazil nuts in addition to their usual diet. The Brazil nuts and pretzels had approximately the same amount of calories and sodium.

The study revealed that Brazil nuts and pretzels substantially reduced feelings of hunger, with the greatest sense of fullness experienced by the group eating Brazil nuts.

Pretzels led to a notable rise in blood glucose and insulin 40 minutes after they were eaten. Brazil nuts, however, did not significantly increase blood glucose or insulin.


Study senior author Dr. Mee Young Hong is a professor in the School of Exercise &amp; Nutritional Sciences at <a href="https://www.sdsu.edu/">San Diego State University</a>.

“While both Brazil nuts and pretzels increased a sense of fullness after they were eaten, eating Brazil nuts stabilized postprandial (after eating) blood glucose and insulin levels, which may be beneficial in preventing diabetes and weight gain,” said Dr. Hong.

“Our study allows researchers and clinicians to consider the possible beneficial role of Brazil nuts to help people feel full and maintain a healthy level of glucose, reducing the risk of obesity and diabetes.”

The research will be presented in Chicago at the <a href="https://professional.heart.org/professional/EducationMeetings/MeetingsLiveCME/ScientificSessions/UCM_316900_Scientific-Sessions.jsp">American Heart Association's Scientific Sessions 2018</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

A daily dose of nuts lowers risk of obesity, related health issues

Eating nuts on a daily basis may prevent weight gain...

two hands of lovers on the background of sunset on the sea

Falling in love can be exciting and euphoric, but new research has revealed that it also comes with a surprising number of health benefits.

While the thrill of romance can put a spring in your step and make you feel like you’re on top of the world, sharing romantic moments with a partner has been linked to lower blood pressure, decreased sensitivity to allergens, and even an improved ability to fight infections. 

According to a report by the <a href="https://www.dailymail.co.uk/health/article-6381807/Why-falling-love-good-blood-pressure-pain-relief-allergic-reactions.html">Daily Mail</a>, the root of these health benefits has to do with the chemicals released in our brain that influence our emotions. 

When you fall in love, your brain releases more <a href="https://www.earth.com/news/love-hormone-socializing-satisfying/">feel-good chemicals</a> like dopamine and oxytocin, also called the cuddle hormone. This release in turn helps reduce anxiety and induces feelings of trust between you and your partner. 

As these warm and fuzzy feelings flood the brain and lower defenses, it can actually lower blood pressure, according to the research published in the journal Annals of Behavioral Medicine found. 

Just hugging a loved one is enough to release oxytocin and lower blood pressure, and researchers from the <a href="https://www.universityofcalifornia.edu/">University of California</a> found that people who are regularly hugged are less anxious and depressed. 

Several studies found that kissing lowered cholesterol and so falling in love has many benefits for cardiovascular health. 

The same chemicals that regulate the reward and pleasure centers in the brain may also help increase your tolerance to pain, according to researchers from <a href="https://www.stanford.edu/">Stanford University</a>. 

In a 2010 study, participants were asked to look at a picture of their loved one or a picture of an acquaintance. 

While looking at the pictures, the researchers touched the participants with a hot probe, and there was a 40 percent decrease in pain levels when the participants were looking at a picture of a loved one. 

This is because dopamine also releases natural painkillers and the study shows that looking at a photo is enough to increase the production of dopamine. 

Dopamine is also connected to the body's immune and nervous systems, and another study published in the journal Psychoneuroendocrinology found that being in love can be useful in fighting off infections. 

50 women were asked to participate in the two-year study, and the research shows that the women in love had higher concentrations of anti-virals in their DNA. 

The chemicals in our brain that regulate emotions, pleasure, and reward have been the subject of many studies. These chemicals and hormones are major driving factors in addiction, and many mental health disorders can be traced back to chemical imbalances in the brain. 

Dopamine, oxytocin, endorphins, and serotonin all help influence our emotions and happiness and being in love can increase production of these chemicals, which not only makes us feel good but also helps improve our health and wellbeing. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>,<a href="https://www.earth.com/"> Earth.com</a> Staff Writer

Falling in love has actual cardiovascular health benefits

Falling in love can be exciting and euphoric, but new...

As <a href="https://www.earth.com/news/songbirds-declining-numbers/">species declines</a> are reported more and more frequently around the world, with climate change and human activities being the biggest drivers of species loss, researchers and conservationists are racing to protect and restore the world’s biodiversity. 

Take forest birds, for example. Some studies have shown that forest trails have a negative effect on bird populations, but it was not well understood if it was the trails themselves or the human activity on the trails that was causing this effect. 

Researchers from the <a href="https://www.uzh.ch/en.html">University of Zurich in Switzerland</a> conducted a study examining forest trails to see how bird populations have responded over the years. 

The results, published in the journal <a href="https://www.frontiersin.org/articles/10.3389/fevo.2018.00175/full">Frontiers in Ecology and Evolution</a>, show that birds avoid trails that are frequently used by humans even if the trails have been in place for many years. 

“We show that forest birds are quite distinctly affected by people and that this avoidance behavior did not disappear even after years of use by humans. This suggests not all birds habituate to humans and that a long-lasting effect remains,” said Yves Bötsch, the lead author the study. “This is important to show because pressure on natural habitats and nature protection areas is getting stronger and access bans are often ignored.”

Hiking, biking, skiing, and walking trails in local, state, and national forest parks are popular for outdoor enthusiasts, but trails and roads break up habitats and separate wildlife populations. 

The question remains, is it the initial development of trails and roads in natural habitats or human activity after the fact that impacts wildlife? 

The researchers surveyed four forests with different levels of recreation and recorded all the birds that were seen and heard near the trails and further away from designated walking areas. 

There were fewer birds near the trails and in the forests that attracted more human visitors. 

Birds that were more sensitive to humans, meaning more likely to fly away if a human comes near, were less abundant near the trails as well. 

“Species with a high sensitivity, measured by flight initiation distance (the distance at which a bird exposed to an approaching human flies away), showed stronger trail avoidance, even in rarely frequented forests,” said Bötsch. “These sensitive species were raptors, such as the common buzzard and Eurasian sparrowhawk, as well as pigeons and woodpeckers.” 

The study shows that human activity along forest trails impacts bird populations, and that it’s not the development of recreational trails that is as much of a problem as previously thought. 

“Generally it is assumed that hiking in nature does not harm wildlife,” said Bötsch. “But our study shows even in forests that have been used recreationally for decades, birds have not habituated to people enough to outweigh the negative impact of human disturbance.”

The researchers recommend expanding protected areas in forests and making sure that these areas are off-limits to people. The team also says that people who enjoy hiking or biking along forest trails should stay on designated trails and not roam from the path. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Paid for by <a href="http://earth.com">Earth.com</a>

How human activity on forest trails impacts bird populations

As species declines are reported more and more frequently around...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="0ynNMYkMKa-2340414-12187" type="single"]</div>



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



---



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

[sendtonews key="0ynNMYkMKa-2340414-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="G9bUoxcjr4-2511624-12187" type="single"]</div>



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;



---



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



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

Flu viruses are more flexible than expected

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="3upvlAaHgO-2256633-12187" type="single"]</div>



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;



---



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

Lake Trasimeno in Central Italy

[sendtonews key="3upvlAaHgO-2256633-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="LvS8v8bp9z-2564889-12187" type="single"]</div>



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;



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="X0f6OHYoI4-2310561-12187" type="single"]</div>



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



---



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



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

How does salt makes things taste better?

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="JRaP49ISmm-2357509-12187" type="single"]</div>



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



---



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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="e4ZG0Jawp3-2374785-12187" type="single"]</div>



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;



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="uV9Lh2fQbV-1760058-12187" type="single"]</div>



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;



---



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



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

Lesotho: Africa's "Kingdom in the Sky"

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="qjvhBOBnY8-2426650-12187" type="single"]</div>



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;



---



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

[sendtonews key="qjvhBOBnY8-2426650-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="oL4FnPTGCV-2384527-12187" type="single"]</div>



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



---



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

[sendtonews key="oL4FnPTGCV-2384527-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="0879czfG3k-1785905-12187" type="single"]</div>



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



---



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



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

The rapid retreat of the Columbia Glacier

[sendtonews key="0879czfG3k-1785905-12187" type="single"] Today’s Video of the Day from NASA...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="6HyfrAJTBI-1831843-12187" type="single"]</div>



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



---



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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="QIoVYJqRBi-2434608-12187" type="single"]</div>



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)



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="JbW4VsY53O-1632195-12187" type="single"]</div>



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;



---



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



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="qARzJPSabQ-2270617-12187" type="single"]</div>



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;



---



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

[sendtonews key="qARzJPSabQ-2270617-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="qas3EhyI0Y-2220951-12187" type="single"]</div>



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



---



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



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

The history of Mars is much more complex than we thought

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="vpljfR2VBX-2560867-12187" type="single"]</div>



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



---



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

[sendtonews key="vpljfR2VBX-2560867-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="MHyhtebibJ-2200368-12187" type="single"]</div>



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;



---



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



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

Satellites capture the world's biggest and fastest waves

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="761m2QQvR1-2035772-12187" type="single"]</div>



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;



---



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...