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12 October 2016

Les arbres se parlent-ils ? [The Conversation]

Un livre récemment paru au Royaume-Uni, The Hidden Life of Trees, affirme que les arbres se parlent. Mais est-ce vraiment le cas ? On pourrait commencer par répondre en disant que les plantes échangent en effet des informations entre elles et avec d’autres organismes, comme les insectes.

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11 October 2016

Trees are much better at creating clouds and cooling the climate than we thought [Phys]

The pre-industrial atmosphere contained more particles, and so brighter clouds, than we previously thought. This is the latest finding of the CLOUD experiment, a collaboration between around 80 scientists at the CERN particle physics lab near Geneva. It changes our understanding of what was in the atmosphere before humans began adding pollution – and what it might be like again in the future.

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9 October 2016

Êtes-vous aussi intelligent que les poissons ? [Sciences et Avenir - Animaux]

Certains poissons seraient plus intelligents que les reptiles, les oiseaux voire ... les grands mammifères ! C’est ce qu’affirme l’éthologue américain, Jonathan Balcombe dans son livre "What a fish knows" sorti en 2016. On ne confère souvent aux poissons ni sentiment, ni capacité cognitive. Et pourtant, de nombreuses études comportementales démontrent le contraire.

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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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