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  1. Life

    Here’s how cells rapidly stuff two meters of DNA into microscopic capsules

    Scientists have figured out how cells quickly pack up their chromosomes before a cell divides.

    By Laurel Hamers
  2. Animals

    Slower speed, tricky turns give prey a chance against cheetahs and lions

    A bonanza of data on wild predators running shows that hunting is more than sprinting.

    By Susan Milius
  3. Animals

    Here’s why so many saiga antelope mysteriously died in 2015

    Higher than normal temperatures turned normally benign bacteria lethal, killing hundreds of thousands of the saiga antelopes.

    By Lesley Evans Ogden
  4. Particle Physics

    Clumps of dark matter could be lurking undetected in our galaxy

    Dark matter, assumed to form featureless blobs, might clump together into smaller objects.