News

  1. Life

    Egg production after birth questioned

    A study finds no evidence of stem cells in adult mouse ovaries, suggesting female mammals really are born with all the gametes they’ll ever have.

    By Tina Hesman Saey
  2. Microbes

    Killing with the flip of a switch

    A single genetic transformation turns mild-mannered bacteria into assassins.

    By Tina Hesman Saey
  3. Life

    Space trek may help worms live long

    After 11 days in orbit, nematodes showed signs of slower aging.

    By Tina Hesman Saey
  4. Space

    Dark matter filament illuminated

    Astronomers visualize a connection in a shadowy cosmic network that is thought to pervade the universe.

    By Devin Powell
  5. Physics

    Higgs found

    The Higgs boson, the last particle in physics’ standard model, falls into place, opening new windows to explore in the universe.