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8 October 2016

As DNA reveals its secrets, scientists are assembling a new picture of humanity [Stat News]

When Benedict Paten stares at his computer monitor, he sometimes gazes at what looks like a map of the worst subway system in the world. The screen is sprinkled with little circles that look like stations. Some are joined by straight lines — sometimes a single path from one circle to the next, sometimes a burst of spokes radiating out in many directions. And sometimes the lines bend into sweeping curves that soar off on express routes to distant stations.
A rainbow palette of colors makes it a little easier to digest the complexity. But if you stare a little too long, vertigo sets in.
This map is not a guide to any city on Earth. It is a sketch of the human gene pool.

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7 October 2016

La "Théorie de l’Esprit" aurait été démontrée chez les grands singes [Sciences et Avenir - Animaux]

Des chercheurs affirment avoir démontré la "Théorie de l’Esprit" chez trois espèces de grands singes. Une petite révolution dans le monde de l’éthologie.

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7 October 2016

The ecology and economics of autumn leaves [PLOS/Blogs]

Beyond pumpkin flavored everything, autumn is big business in some parts of the United States. And the main draw are the leaves themselves. In New England alone, tourists venturing to witness the change-in-color, a hobby known colloquially as “leaf peeping,” spend upwards of $3 billion US dollars annually. There are even great debates about where the best places to go “leaf peeping” are—a personal nod for me towards the Great Smoky Mountains in North Carolina and the Canaan Valley in West Virginia. And while we are amazed at the natural tapestry autumn brings us, the underlying ecology is equally fascinating.

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7 October 2016

Les lichens, de précieux alliés pour évaluer le changement climatique Les lichens, de précieux alliés pour évaluer le changement climatique [Défi Ecologique]

Peu connus, les lichens n’intéressent que quelques centaines de naturalistes en France. Pourtant, leur mode de vie et leur écologie très particulière en font d’excellents indicateurs pour mesurer les perturbations que subit notre environnement. Réputés pour être de bons indicateurs de la qualité de l’air, on sait moins que les lichens sont également de précieux alliés pour évaluer les impacts du changement climatique…

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6 October 2016

Flower hijacks the fragrance of attacked bees to imprison flies [New Scientist]

Stop and smell the dying bees. The scent of a South African plant mimics the chemicals honeybees release when they’re under attack.
Scavenging flies on the lookout for a meal are then tricked into pollinating the plant’s flowers.(...)

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