Uncategorized

  1. Physics

    Like birds of a feather, sperm flock together

    Studies of sperm show that they swim in groups because of the elasticity of the mucus they travel through.

    By Tom Siegfried
  2. Planetary Science

    Get your Pluto trivia down cold

    Eight months after visiting Pluto, the New Horizons spacecraft has delivered a wealth of details about the dwarf planet and its family of moons.

    By Christopher Crockett
  3. Humans

    Pacific islanders got a double whammy of Stone Age DNA

    Neandertal and Denisovan genes influence the health of present-day Melanesians.

    By Bruce Bower
  4. Health & Medicine

    Efforts to control mosquitoes take on new urgency

    The major mosquito that is spreading Zika virus has quirks that make it one of the toughest to fight.