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28 April 2017

Female dragonflies fake sudden death to avoid male advances [New Scientist]

Female dragonflies use an extreme tactic to get rid of unwanted suitors: they drop out the sky and then pretend to be dead.

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28 April 2017

“65 million years of change in temperature and topography explain evolutionary history in eastern North American Plethodontid salamanders” [American Society of Naturalists]

65 million years of temperature and topographic change explain phylogenetic and spatial patterns in salamanders.

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28 April 2017

Common pesticide damages honey bee’s ability to fly [Phys]

Biologists at the University of California San Diego have demonstrated for the first time that a widely used pesticide can significantly impair the ability of otherwise healthy honey bees to fly, raising concerns about how pesticides affect their capacity to pollinate and the long-term effects on the health of honey bee colonies.

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27 April 2017

Lutte contre le changement climatique : quelles trajectoires possibles ? [IRSTEA]

Comment revenir en 2100 à un seuil de CO2 défini comme la limite planétaire vis-à-vis du changement climatique ? Un article publié dans la revue Nature - Scientific Reports et co-écrit par Jean-Denis Mathias, chercheur à Irstea, permet de définir le champ des options à prendre. Dates clés et objectifs chiffrés sont désormais à la disposition des décideurs publics pour agir au plus tôt.

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27 April 2017

Gut bacteria tell the brain what animals should eat [Phys]

Neuroscientists have, for the first time, shown that gut bacteria "speak" to the brain to control food choices in animals. In a study publishing April 25 in the Open Access journal PLOS Biology, researchers identified two species of bacteria that have an impact on animal dietary decisions. The investigation was led by Carlos Ribeiro, and colleagues from the Champalimaud Centre for the Unknown in Lisbon, Portugal and Monash University, Australia.

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