News

  1. Health & Medicine

    Nonstick toxicity

    By mimicking the action of estrogen, a widely used nonstick chemical promotes cancer development in animals.

    By Janet Raloff
  2. Animals

    Courting both ways

    Some extra dopamine, and male fruit flies like boys too.

    By Susan Milius
  3. Life

    These colors don’t run

    A chameleon employs different color-changing defenses depending on its predator.

    By Susan Milius
  4. Health & Medicine

    Donor dilemma

    Blood donors age 16 or 17 are more apt to faint than older donors.

    By Nathan Seppa
  5. Life

    Reviving extinct DNA

    For the first time, scientists have resurrected a piece of DNA from an extinct animal — the Tasmanian tiger.