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Fenced-In Lions Divide Wildlife Conservationists

Times are grim for the king of the beasts. Roughly 35,000 African lions roam the savannahs, down from more than 100,000 half a century ago, thanks to habitat loss, declining numbers of prey animals... -- Read more on ScientificAmerican.com

Comment un arbre mène des fourmis à l’esclavage

mercredi 20 novembre 2013 par Pierre Barthélémy — Biologie, Botanique, Acacias, Entomologie, Fourmis, Mutualisme, Symbiose
Le mutualisme, ce n'est pas qu'une histoire de banque et d'assurance. En biologie, ce terme désigne une association équilibrée entre deux partenaires qui en tirent un bénéfice. Un accord gagnant-gagnant, pour reprendre une expression de l'époque. Un des cas les … Continuer la lecture (...)

Winning two Nobel Prizes, turning down knighthoods: The legacy of Fred Sanger (1918-2013)

Fred Sanger (1918-2013) (Image: The Telegraph) British biochemist Fred Sanger died today at 95. He’s the only person to win two Nobel Prizes in chemistry, an achievement that is... -- Read more on ScientificAmerican.com

How Your Morning Commute Resembles a Fungus

mercredi 20 novembre 2013 — Evolution
In many fungi, the DNA storage compartments called nuclei are not prisoners of the cells they reside in, the way they are in animals and plants. Instead, fungal nuclei are free to move about the... -- Read more on ScientificAmerican.com

HHMI, with Sean B. Carroll, Premieres New Films for Teachers

mercredi 20 novembre 2013 — Evolution
“ Film is a powerful way to tell stories. … The right story, told well, can be engaging, informative, and memorable.” –Sean B. Carroll The Howard Hughes Medical Institute... -- Read more on ScientificAmerican.com

How Traffic Jams Decentralize Cities

Most of the cities that exist today originally grew from an important marketplace or town square. Over time, they developed multiple centers where people could go to work, shop and play--in fact, no... -- Read more on ScientificAmerican.com

Flight of the Microraptor

mardi 19 novembre 2013 — Evolution
Microraptor gliding in pursuit of a prey item. There are good reasons for thinking that Microraptor really did behave this way, and that it had black, iridescent plumage. Image by Emily Willoughby,... -- Read more on ScientificAmerican.com

Conservation's Holy Grail: "Asian Unicorn" Sighted in Vietnam

One of the rarest creatures in Asia has been spotted in the wild for the first time in nearly 15 years. A camera trap in Vietnam has captured three fleeting images of a single saola ( Pseudoryx... -- Read more on ScientificAmerican.com

Sunday Species Snapshot: Jackass Penguin

dimanche 17 novembre 2013 — Energy & Sustainability,More Science,Evolution
These popular penguins have faced a lot of threats in recent years that have put them on a dangerous path. Species name: African penguin ( Spheniscus demersus ), a.k.a. the black-footed penguin or... -- Read more on ScientificAmerican.com

Khalil's Picks (15 November 2013)

vendredi 15 novembre 2013 — Evolution,More Science,Health,Space
Another really awesome week with everything from some some meta-science journalism stories to the wonders of rocks ants, crocodiles, dead satellites and Carl Sagan. Yep. [More] -- Read more on ScientificAmerican.com

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