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Revealed: The First Flower, 140-million Years Old, Looked Like a Magnolia

mardi 1er août 2017 par Mario Vallejo-Marin, The Conversation US — The Sciences, Evolution

Scientists have reconstructed the ancient plant and figured out how it reproduced -- Read more on ScientificAmerican.com

Scientific American

Screams Heard Round the Animal World

mardi 1er août 2017 par Karen Hopkin — The Sciences, Biology, Evolution

Humans appear well equipped to recognize the alarm calls of other animals—perhaps because sounds of distress tend to have higher frequencies. Karen Hopkin reports. -- Read more on ScientificAmerican.com

Scientific American

This Caterpillar Whistles While It Irks

vendredi 28 juillet 2017 par Christopher Intagliata — The Sciences, Biology, Evolution

The North American walnut sphinx caterpillar produces a whistle that sounds just like a songbird's alarm call--and the whistle seems to startle birds. Christopher Intagliata reports. -- Read more on ScientificAmerican.com

Scientific American

Bacteria Can Be Resistant to Brand-New Antibiotics

mardi 25 juillet 2017 par Christopher Intagliata — Health, Medicine, Public Health, The Sciences, Biology, Evolution

Exposure to existing antibiotics can imbue infectious bacteria with resistance that also kicks in against new drugs related to the originals. Christopher Intagliata reports. -- Read more on ScientificAmerican.com

Scientific American

Fossils We Want to Find

dimanche 23 juillet 2017 par Darren Naish — The Sciences, Evolution

There’s a list of fossils I’d really like you to go out and find. Good luck. -- Read more on ScientificAmerican.com

Scientific American

Paleo Profile: Currie's Alberta Hunter

dimanche 23 juillet 2017 par Brian Switek — The Sciences, Evolution

Sometimes a single bone can give away the presence of an unknown dinosaur -- Read more on ScientificAmerican.com

Scientific American

The Shark That Conquered the Whorl

samedi 22 juillet 2017 par Steve Mirsky — The Sciences, Arts & Culture, Biology, Evolution

Journalist and author Susan Ewing talks about her new book Resurrecting the Shark: A Scientific Obsession and the Mavericks Who Solved the Mystery of a 270-Million-Year-Old Fossil. (And we'll discuss... -- Read more on ScientificAmerican.com

Scientific American

Buried Tools and Pigments Tell a New History of Humans in Australia for 65,000 Years

mercredi 19 juillet 2017 par Chris Clarkson, Ben Marwick, Lynley Wallis, Richard Fullagar, Zenobia Jacobs, The Conversation US — The Sciences, Evolution

Australia is the end point of early modern human migration out of Africa, and sets the minimum age for the global dispersal of humans -- Read more on ScientificAmerican.com

Scientific American

Untangling the Mystery of How Fido Became Humankind's Best Friend

mercredi 19 juillet 2017 par Jason G. Goldman — The Sciences, Arts & Culture, Biology, Evolution

New DNA-based research suggests dogs were domesticated in a single event, in contrast with a previous hypothesis -- Read more on ScientificAmerican.com

Scientific American

Nasty, Brutish and Short: Are Humans DNA-Wired to Kill?

mercredi 19 juillet 2017 par Josh Gabbatiss, Sapiens — The Sciences, Biology, Evolution

Some research suggests a tendency toward violence has shaped our anatomy throughout evolution. But anthropologists are sharply divided -- Read more on ScientificAmerican.com

Scientific American