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27 February 2018

Migration research reveals key to declines in rare songbirds [Phys]

By tracking one of the smallest species ever monitored over thousands of miles using cutting-edge technology, a team of ornithologists led by scientists at The University of Toledo found that it is where golden-winged warblers spend the winter in the tropics that determines if a population is declining or stable, not factors associated with the breeding grounds thousands of miles north in the United States and Canada.

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26 February 2018

Face aux pesticides chimiques, les biopesticides tracent leur chemin [Reporterre]

Se passer des pesticides de synthèse : l’idée fait son chemin. Le « biocontrôle » a le vent en poupe, mais l’utilisation de produits d’origine naturelle suppose un changement du mode d’exploitation agricole.

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26 February 2018

Food for Thought: Was Cooking a Pivotal Step in Human Evolution ? [Scientific American]

The dietary practice coincided with increases in brain size, evidence suggests.

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26 February 2018

Plants evolve away from obsolete defenses when attacked by immune herbivores, study shows [Phys]

The study, published in New Phytologist and led by Tatyana Livshultz, PhD, assistant curator of Botany at the Academy and an assistant professor in the College of Arts and Sciences, found genetic evidence that multiple lineages of plants, whose ancestors produced a chemical that may deter herbivores, evolved to stop producing it, potentially as a response to a prime foe’s immunity.

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26 February 2018

The terrifying phenomenon that is pushing species towards extinction [The Guardian]

Scientists are alarmed by a rise in mass mortality events – when species die in their thousands. Is it all down to climate change ?

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