News

  1. Paleontology

    New fossils threaten an extinction theory

    Recent discoveries of long-dead marine invertebrates call into question the occurrence of a catastrophic global extinction during the Late Devonian period, between 385 and 375 million years ago.

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  2. Animals

    She-male garter snakes: Some like it hot

    Male garter snakes that emerge from hibernation and attract a mob of deluded male suitors may just be looking for safety in numbers and body heat.

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  3. Physics

    The Brazil nut effect gets more jumbled

    New and puzzling evidence for why big particles bob to the top when mixtures of granular materials are shaken-the so-called Brazil nut effect-emerges from an experiment showing that even the air between grains plays a role.