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22 mai 2017

A Grand New Theory of Life’s Evolution on Earth [The Atlantic]

A series of energy revolutions—some natural, some technological—built upon one another to give us our rich, diverse biosphere.

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22 mai 2017

Le serpent brun change de proie en vieillissant [Sciences et Avenir - Animaux]

Ce reptile australien très venimeux voit la composition de son venin changer au cours de sa vie. Il peut ainsi modifier son régime alimentaire et éviter la terrible course à l’armement entre le poison du prédateur et le contrepoison de la proie.

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20 mai 2017

Les arbres peuvent dégrader la qualité de l’air [Le Monde - Planète]

En ville, par forte chaleur, les végétaux produisent de l’ozone et des particules fines.

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20 mai 2017

Climate Change Is Turning Antarctica Green [Scientific American]

A new study has found a steady growth of moss in Antarctica over the last 50 years.

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19 mai 2017

The curious case of the caterpillar’s missing microbes [Nature - News]

Many animals, including humans, can’t live healthy lives without the microbes in their guts. These intestinal residents break down food and help to fight off disease-causing microorganisms. But the latest research suggests that some species, including caterpillars, can do just fine without them. It’s possible, say scientists who have studied these symbiotic bacteria, fungi and other microbes, that gut microbiomes might be less ubiquitous than previously assumed.

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