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Bird Nests Used to Look More Like Fortresses

vendredi 28 avril 2017 par Kat Long — Advances, The Sciences, Evolution

The standard cup nest predominates today, but bird nests evolved from a more complex roofed structure -- Read more on ScientificAmerican.com

Scientific American

Gut Microbes Help Keep Starved Flies Fecund

jeudi 27 avril 2017 par Christopher Intagliata — Health, The Body, The Sciences, Biology, Evolution

Microbes living in the guts of fruit flies appear to influence the flies' food choice—and promote egg production, even under a nutrient-poor diet. Christopher Intagliata reports. -- Read more on ScientificAmerican.com

Scientific American

Broken Bones Hint at Earlier Human Arrival in the Americas

mercredi 26 avril 2017 par Nature Video — The Sciences, Evolution

Mastodon bones and shattered stones suggest humans were migrating to the Americas some 100,000 years earlier than currently thought. Nature Video explores this controversial find. This video was... -- Read more on ScientificAmerican.com

Scientific American

Ancient Bones Spark Fresh Debate over First Humans in the Americas

mercredi 26 avril 2017 par Kate Wong — The Sciences, Evolution

A study of remains found in southern California puts an unknown human species in the New World more than 100,000 years earlier than expected—but critics aren’t buying it -- Read more on ScientificAmerican.com

Scientific American

Dog Family Tree Reveals Hidden History of Canine Diversity

mercredi 26 avril 2017 par Erin Ross, Nature magazine — The Sciences, Biology, Evolution

Genetic map showing how breeds are related provides a wealth of information about origins -- Read more on ScientificAmerican.com

Scientific American

Selective Breeding Molds Foxes into Pets

mercredi 26 avril 2017 par Steve Mirsky — Behavior & Society, The Sciences, Biology, Evolution

Evolutionary biologist Lee Dugatkin talks about the six-decade Siberian experiment with foxes that has revealed details about domestication in general. -- Read more on ScientificAmerican.com

Scientific American

Ancestors of Flores "Hobbits" May Have Been Pioneers of First "Human" Migration Out of Africa

mardi 25 avril 2017 par Alice Roberts, The Conversation US — The Sciences, Biology, Evolution

New research on Indonesian fossils reveals clues to an ancient expansion from Africa -- Read more on ScientificAmerican.com

Scientific American

Losing Key DNA Made Us Modern Humans

mardi 25 avril 2017 par Philip L. Reno — Features, The Sciences, Biology, Evolution

Loss of some DNA during evolution may have helped create big brains and our male–female relationships -- Read more on ScientificAmerican.com

Scientific American

Mining Threatens Chinese Fossil Site That Revealed Planet's Earliest Animals

lundi 24 avril 2017 par David Cyranoski, Nature — The Sciences, Evolution

Protests sparked by the destruction of three key fossil-hunting areas result in a temporary halt of phosphate mining -- Read more on ScientificAmerican.com

Scientific American