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A new book “The Naked Neanderthal” says humans were the main cause thanks to their superior weapons. Compared to early humans, Neanderthals were muscular with a prominent brow and less pronounced chin. Since humans were the final species to occupy the cave, Slimak argues it's because they'd replaced those Neanderthals by wiping them out. Humans' superior weaponsScientists have found relatively few weapons belonging to Neanderthals , Slimak wrote. Yet genes can't tell us much about the nature of these interactions or how closely or amicably humans and Neanderthals lived.
Persons: Ludovic Slimak, , April Nowell, sapien, , , Slimak, Bill O'Leary, sapiens, they'd, Chemnitz State Museum of Archaeology Hendrik Schmidt, Nowell, haven't, Nikola Solic, ” Nowell, Sapiens Organizations: Service, University of Victoria, Smithsonian Museum, Washington, Getty, Chemnitz State Museum of Archaeology, Reuters Locations: Europe, East, Central Asia, Southern Siberia, Southern France, Chemnitz, France, Spain, Krapina, Croatia
Interbreeding with Homo sapiens helps to explain why millions can't straighten their fingers. There is also a Neanderthal gene variant that increases the risk of somebody dying from COVID-19. The study evidences that "intermingling" from Neanderthals and our Homo sapiens ancestors is consequential in examining the prevalence of certain diseases, researchers said. No more than 7% of the human genome is unique to Homo sapiens, according to a study published in the journal Science Advances. Brain development and function are what sets Homo sapiens apart, experts explained.
Persons: sapiens, , Hugo Zeberg, Nikola Solic, Zeberg Organizations: Service, British Society for Surgery, Karolinska Institute, Times Locations: COVID, Europe, Finland, Africa, Sweden, Asia
Meanwhile, one group of a related species — Neanderthals — developed a mutation that could have spared them the smell of their own body odors. It's a popular idea that humans have a bad sense of smell, as compared with dogs, for instance. Will Oliver/PA Images/Getty"We have to really understand ourselves within our own context," rather than comparing humans to dogs or monkeys, as previous research on smell receptors has done, Hoover said. To Hoover's surprise, the Neanderthals, Denisovan, and humans all appeared to have the same repertoire of smells. More research like it, with more samples of ancient genomes, could reveal a clearer picture of Neanderthal and Denisovan life.
Wood frogs freeze their bodies. Nikola SolicTo survive the winter, up to 60 percent of Alaskan wood frogs' bodies freeze solid. This allows them to survive temperatures as low as -80 degrees Fahrenheit. To achieve this semi-frozen state, the frogs build up high concentrations of glucose (up to 10 times the normal amount) in their organs and tissues. The sugar solutes act as "cryoprotectants," preventing their cells from shrinking or dying.
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