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Water fluoridation is a contentious issue in the United States, with recent discussions around potential bans gaining momentum. Introduced in Michigan in 1945, fluoride in public drinking water has been credited with improving oral health but has faced significant opposition due to concerns over its neurotoxic effects. U.S. Health Secretary Robert F. Kennedy Jr. has suggested rescinding CDC recommendations for fluoridation, while the EPA is reviewing its health risks. A study by Harvard researchers predicts that halting fluoridation could lead to a 7.5% increase in dental caries over five years, resulting in 25.4 million additional cases and an economic burden of $9.8 billion. The researchers emphasize that, despite fears of toxicity, the benefits of fluoridation at safe levels far outweigh the risks, particularly for children, underscoring the importance of maintaining this public health measure. The findings are published in JAMA Health Forum. 
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Jun 01 2025, 3 ameznews.inDr. Ana Gracanin from the Australian National University has made a remarkable discovery about greater gliders, a lesser-known marsupial species, by using an infrared camera placed inside a tree hollow. Contrary to previous beliefs that male gliders were uninvolved in parenting, Gracanin observed a male glider, Milo, delivering eucalyptus stems to his young, Brimi, using his tail. This behavior, along with the gliders' prehensile tails, challenges assumptions about their solitary nature and highlights their vulnerability to habitat loss, particularly as they rely on old trees for nesting. Gracanin's livestream project, which required extensive setup, aims to shed light on the private lives of these creatures, revealing their dependence on family-sized hollows for survival. With significant population declines following recent bushfires and ongoing threats from climate change, conservation efforts are critical to protect these adorable animals and their habitats.
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Jun 17 2025, 8 pmeznews.inIn Central Chile, a live demonstration highlights the critical relationship between plants and animals in seed dispersal, particularly as many plant species face isolation and endangerment due to their reliance on extinct megafauna like mastodons. Research led by Professor Florent Rivals reveals that the Pleistocene mastodon, _Notiomastodon platensis_, consumed fruits, including those of the Chilean palm, aiding in seed distribution across vast areas. However, with 40% of the fruit species that once thrived in these ecosystems now threatened, the loss of large animal dispersers has dire consequences for plant survival. In contrast, regions with surviving seed-dispersing animals, such as tapirs and monkeys, show significantly lower rates of endangerment among large fruiting plants. The study underscores the long-lasting impacts of severed ecological relationships and the urgent need for conservation efforts to preserve these unique plant populations, as highlighted in the journal *Nature Ecology and Evolution*.
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Jun 17 2025, 2 ameznews.inResearchers at Tufts University School of Medicine have developed a groundbreaking dental implant that aims to replicate the sensory experience of natural teeth. Traditional implants, which involve fusing titanium posts to the jawbone, often lack the nerve connections that provide feedback during eating and speaking. The new implant features a biodegradable coating that releases stem cells and proteins to promote nerve tissue growth, allowing the implant to connect to the body's sensory system. Additionally, the coating contains memory foam-like particles that enable the implant to expand and fit snugly in the socket, preserving surrounding nerve endings. Initial tests on rats showed promising results, with no signs of inflammation or implant displacement, and evidence of integration through soft tissue rather than bone fusion. While these findings are encouraging, further research is necessary to assess the implants' safety and effectiveness in other animal models before human trials can begin. The study is published in *Scientific Reports*.
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Jun 15 2025, 10 pmeznews.inCancer remains a leading global health challenge, responsible for 9.7 million deaths in 2022, with lung cancer being the most lethal, claiming 1.8 million lives worldwide. In the United States, it is estimated that one in four individuals will be diagnosed with cancer in their lifetime, with lung, colon, pancreatic, and breast cancers contributing significantly to mortality rates. Notably, while breast cancer has a high mortality rate, it also boasts a five-year survival rate of 99.3%. Disparities in cancer mortality are evident, with men, particularly non-Hispanic black men, facing higher rates than women. Geographic differences also highlight healthcare access issues, as seen in contrasting mortality rates between Mississippi and Hawaii. However, advancements in treatment and lifestyle changes have led to a decline in cancer deaths in the U.S., with promising new therapies and personalized vaccines currently in development.
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Jun 17 2025, 5 pmeznews.inFrance holds the record for the most time zones of any country, with 12 distinct zones (13 if including its Antarctic claim), according to Guinness World Records. This surprising statistic stems from France's numerous overseas territories, which span the globe from French Polynesia to the Caribbean and the Indian Ocean. The time zones range from UTC−10:00 in French Polynesia to UTC+12:00 in Wallis and Futuna. While the world is divided into 38 observed time zones, most countries operate within a single zone, with Russia and the USA each having 11. Notably, China, despite covering nearly five geographical time zones, adheres to a single time zone, Beijing Time, while India also maintains one time zone for national unity, leading to significant variations in sunrise and sunset times across its vast territory.
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Jun 17 2025, 8 ameznews.inThe cowgirl position, also known as the cowboy or rider position, is a popular penetrative sex position where the receiving partner sits atop the penetrating partner, typically facing each other. This position allows for various adaptations, including the reverse cowgirl and horizontal cowgirl, enhancing intimacy and pleasure. It is particularly favored for its potential to stimulate the clitoris, making it the second most popular choice for men and the third for women, according to sex experts. However, caution is advised, as studies indicate that about 50% of penile fractures during sex occur in this position, often due to erratic thrusting. Communication between partners is essential to ensure comfort and enjoyment, thereby minimizing risks. Overall, the cowgirl position remains a versatile and widely appreciated choice for couples looking to explore their sexual dynamics.
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Jun 17 2025, 12 pmeznews.inIn the animated film _Finding Nemo_, a scene featuring Bruce the shark raises an intriguing question about the function of shark nostrils, or nares, given that sharks lack lungs. Unlike humans, who rely on lungs to draw in air for smelling, sharks have a distinct olfactory system that operates separately from their respiratory system. Their nares contain a complex structure called a rosette, which detects odors in water, allowing sharks to locate prey effectively. Water flows into the nares as sharks swim, or through tiny cilia-like hairs, facilitating the detection of scents. Research by Jelle Atema from Boston University reveals that sharks not only track the highest concentration of odors but also consider water currents, enhancing their hunting efficiency. Thus, while sharks have nostrils, they serve a unique purpose in olfaction rather than respiration, underscoring the evolutionary adaptations of these marine predators.
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Jun 13 2025, 2 ameznews.inA newly discovered dinosaur species, _Khankhuuluu mongoliensis_, has been unearthed in Mongolia, marking a significant addition to the tyrannosaur lineage. Named after the Mongolian term for "dragon prince," this relatively small dinosaur weighed approximately 750 kilograms and measured about 4 meters in length. Fossils indicate that _Khankhuuluu_ is the closest known ancestor to the iconic tyrannosaurs, suggesting a pivotal evolutionary shift that led to the migration of smaller species from Asia to North America around 85 million years ago. This discovery challenges previous assumptions about the tyrannosaur family tree, revealing that smaller "Pinocchio" rexes were not primitive but rather highly evolved relatives of larger giants like _Tyrannosaurus rex_. Researchers, including Dr. Darla Zelenitsky, emphasize that this finding has reshaped our understanding of tyrannosaur evolution, clarifying relationships within this fascinating group of dinosaurs. The study is published in the journal *Nature*.
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Jun 13 2025, 4 pmeznews.inChevrotains, a group of ten small, elusive species in the family Tragulidae, inhabit warmer regions of Southeast Asia, India, and Africa. Despite their name, they are neither mice nor deer but are classified as ungulates and ruminants, possessing a four-chambered stomach. Typically solitary and shy, these herbivores measure around 30 centimeters tall and weigh between 1 to 15 kilograms, with the Java mouse deer being the smallest. Notably, male chevrotains have tusk-like fangs used in territorial disputes. The silver-backed chevrotain, or Vietnamese mouse-deer, was rediscovered in 2019 after being thought lost since 1907, highlighting conservation efforts. The Balabac mouse-deer is currently listed as "Endangered" by the IUCN, facing threats from poaching and habitat loss due to agricultural expansion. Chevrotains play a crucial role in their ecosystems, with the water chevrotain adept at evading predators by submerging in water.
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Jun 17 2025, 3 ameznews.inA recent study led by Stephen Kagan has delved into the vivid experiences of individuals using N,N-Dimethyltryptamine (DMT), a powerful psychedelic. Analyzing 100 trip reports sourced from platforms like YouTube and Erowid, Kagan categorized the experiences into five main areas: Places, Objects, Entities, Feelings, and Attributes. Users frequently reported encounters with complex visual phenomena, synesthesia, and autonomous entities, often describing these experiences as more "real than real." Notably, humanoid entities were the most commonly reported, with descriptions ranging from alien-like figures to mythic beings. Kagan emphasized the need for further research into DMT's effects, particularly as movements advocating for its legalization gain momentum. He suggested that understanding these experiences could enhance therapeutic applications, potentially positioning DMT as a more manageable clinical treatment compared to psilocybin, given its rapid onset. The findings underscore the profound and transformative nature of DMT experiences, warranting deeper investigation.
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Jun 17 2025, 1 amFor the fastest, latest, not so wokest news, 'experts say' you need to visit Eznews
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