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Warm-Blooded Animals Lost Ability to Heal the Heart
vendredi 8 mars 2019 par Christopher Intagliata — Health, Medicine, The Sciences, Biology, Evolution
Thyroid hormone, which helps warm-blooded animals regulate body temperature, also appears to put a halt on heart regeneration. Christopher Intagliata reports. -- Read more on ScientificAmerican.com
The Other Tool Users
Excavations of stone tools left behind by nonhuman primates are illuminating the origins of technological innovation -- Read more on ScientificAmerican.com
Susceptibility to Mental Illness May Have Helped Humans Adapt over the Millennia
vendredi 1er mars 2019 par Dana G. Smith — Features, Mind, Behavior & Society, Mental Health, The Sciences, Evolution
Psychiatrist Randolph Nesse, one of the founders of evolutionary medicine, explains why natural selection did not rid our species of onerous psychiatric disorders -- Read more on ScientificAmerican.com
The First Time I Saw the Grand Canyon
mardi 26 février 2019 par Andrew de Wet — The Sciences, Evolution
On the national park's 100th anniversary, a South African–born geologist recalls his first encounter with a spectacular natural wonder -- Read more on ScientificAmerican.com
Did Crawling Critters Leave These Cracks? The Answer Could Rewrite Evolutionary History
mardi 26 février 2019 par Jim Daley — The Sciences, Evolution
Researchers say they found evidence life began moving 2.1 billion years ago, but that contentious conclusion is far from certain -- Read more on ScientificAmerican.com
Grandma's Influence Is Good for Grandkids
Grandmothers can enhance the survival of grandchildren. That is, unless grandma’s too old or lives too far away. Karen Hopkin reports. -- Read more on ScientificAmerican.com
Fossil Bones Reveal New Baby Dinosaur
samedi 23 février 2019 par Brian Switek — The Sciences, Evolution
The partial skull and additional bones represent a dinosaur species never found before -- Read more on ScientificAmerican.com
The Real Dino Killer: A One–Two Punch
An asteroid impact and volcanoes acting together could have done in the beasts, new rock dates indicate -- Read more on ScientificAmerican.com
Light-Skin Variant Arose in Asia Independent of Europe
mardi 19 février 2019 par Christopher Intagliata — The Sciences, Evolution
A new genetic study of Latin Americans provides evidence that gene variants for lighter skin color came about in Asia as well as in Europe. Christopher Intagliata reports. -- Read more on ScientificAmerican.com
Spectacular Fossil Bird Foot Preserved in Amber
samedi 16 février 2019 par Brian Switek — The Sciences, Evolution
A rare amber inclusion underscores the importance of carnivores to the fossil record -- Read more on ScientificAmerican.com
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