News

  1. Earth

    Grazing on the Periodic Table: Some ancient microorganisms lived on a diet of pure sulfur

    Microorganisms that lived 3.5 billion years ago obtained energy by metabolizing pure sulfur.

    By Sid Perkins
  2. Health & Medicine

    Debate Renewed: Diabetes drug ups heart risk

    A popular diabetes drug significantly increases the risk of heart failure and heart attack in those who take it.

    By Brian Vastag
  3. Animals

    Fish Switch: Salmon make baby trout after species, sex swap

    Salmon implanted with trout reproductive tissue bred to produce a generation of normal rainbow trout.

    By Susan Milius
  4. Planetary Science

    Survivor: Extrasolar planet escapes stellar attack

    An extrasolar planet survived after its aging parent star ballooned into a red giant that almost engulfed it.