News

  1. Health & Medicine

    E. coli evade detection by going dormant

    When stressed, bacteria can temporarily turn comatose and dodge germ-screening tests.

    By Janet Raloff
  2. Space

    Distant world looks ripe for life

    Extrasolar planet hunt spots its most Earthlike orb yet.

    By Nadia Drake
  3. Humans

    DNA highlights Native American die-off

    A genetic analysis points to widespread New World deaths after Europeans arrived.

    By Bruce Bower
  4. Humans

    Saving the Last Supper

    Tourists and cosmetics seem to be threatening da Vinci’s masterpiece.

    By Rachel Ehrenberg
  5. Earth

    Arctic has taken a turn for the warmer

    Northern climate has changed substantially in the last five years, and the shift is probably permanent.