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Friday, August 7, 2020
Human embryos have additional hand muscles discovered in lizards however not most grownups

Human embryos have additional hand muscles discovered in lizards however not...

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Human embryos are more muscle-bound than adult humans, new microscope images cataloging early development show. For instance, at seven weeks of gestation, embryonic hands have about 30 muscles. Adults have about 19. Many of the muscles are lost, and some fuse with others, adopting the adult arrangement by 13 weeks of gestation, researchers report October…
Customized diet plans might be the future of nutrition. However the science isn’t all there yet

Customized diet plans might be the future of nutrition. However the...

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Microbiologist Lora Hooper wishes she had a good answer when her mother asks, “What should I eat?” Hooper could rely on a familiar refrain. Eat plenty of fruits, vegetables and whole grains, and limit meat and fat intake. Try to eat foods low on the glycemic index, a measure of how high a particular food…
Vaping-related health problem reports have actually risen to 805 from 46 U.S. states

Vaping-related health problem reports have actually risen to 805 from 46...

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The number of vaping-related lung injuries has soared in the last week, up to 805 from 530, the U.S. Centers for Disease Control and Prevention reports. Forty-six states and one territory, the U.S. Virgin Islands, have been affected. Twelve people in 10 states — California, Florida, Georgia, Illinois, Indiana, Kansas, Minnesota, Mississippi, Missouri and Oregon…
Alcohol-producing germs might trigger liver illness in some individuals

Alcohol-producing germs might trigger liver illness in some individuals

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Friendly gut bacteria that make their own alcohol may seem like the life of the party. But they could be dangerous friends to have. These ethanol-producing microbes may cause nonalcoholic fatty liver disease, researchers report September 19 in Cell Metabolism. Fatty liver disease results when too much fat is stored in the liver, and can…
Ancient DNA exposes the very first glance of what a Denisovan might have appeared like

Ancient DNA exposes the very first glance of what a Denisovan...

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Scientists have painted a portrait of a young female who belonged to a mysterious, humanlike population known as Denisovans around 50,000 years ago. Here’s the kicker: Only a handful of Denisovan fossils have been found, including the youngster’s pinky finger. So a team led by evolutionary geneticists David Gokhman and Liran Carmel of the Hebrew…
Children born by C-section have more possibly contagious germs in their guts

Children born by C-section have more possibly contagious germs in their...

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Babies born by Caesarean section may miss out on many of mom’s helpful gut microbes. Instead, these infants’ guts harbor more bacteria that commonly lurk in hospital rooms, scientists found. The finding, described September 18 in Nature, adds weight to the idea that C-sections, and the antibiotics that often come with the procedure, may change…
An island tomb website mean distant ties amongst ancient Americans

An island tomb website mean distant ties amongst ancient Americans

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Ancient North American hunter-gatherers had direct contacts with people living halfway across the continent, researchers say. A ceremonial copper object and related burial practices at a roughly 4,000-year-old human grave site encircled by a massive ring of seashells in what’s now the southeastern United States closely correspond to those previously found at hunter-gatherer sites near…
Artists who paint with their feet have ‘toe maps’ in their brains

Artists who paint with their feet have ‘toe maps’ in their...

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Two artists who paint with their toes have unusual neural footprints in their brains. Individual toes each take over discrete territory, creating a well-organized “toe map,” researchers report September 10 in Cell Reports. Similar brain organization isn’t thought to exist in people with typical toe dexterity. So finding these specialized maps brings scientists closer to…
Culture assists form when infants discover to stroll

Culture assists form when infants discover to stroll

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For generations, farther back than anyone can remember, the women in Rano Dodojonova’s family have placed their babies in “gahvoras,” cradles that are part diaper, part restraining device. Dodojonova, a research assistant who lives in Tajikistan, was cradled for the first two or three years of her life. She cradled her three children in the…
Stone tools might position a few of the very first Americans in Idaho 16,500 years ago

Stone tools might position a few of the very first Americans...

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America’s first settlers may have coasted in. Northeast Asians traveled down North America’s Pacific coast and then eastward into the continent more than 1,500 years before an inland, ice-free corridor opened up, researchers say. That conclusion, reported in the Aug. 30 Science, rests on discoveries at a site in western Idaho called Cooper’s Ferry. Stone…

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