News

  1. Health & Medicine

    Breast-feeding has protective bonus

    Breast-feeding appears to help ward off breast cancer.

    By Damaris Christensen
  2. Materials Science

    New gel could lead to cartilage repair

    A new scaffold material that contains cartilage cells and encourages their growth could help scientists create living tissue replacements suitable for treating osteoarthritis and sports injuries.

    By Jessica Gorman
  3. Animals

    Hyena androgens exact high cost

    Blocking androgens for spotted hyenas before they're born shows that the exposure of a female fetus to male hormones normally takes a heavy physical toll when females bear their own pups.

    By Susan Milius
  4. Animals

    Deer littermates have different dads

    Twin fawns may not have the same dad—the first time multiple paternity has turned up in a large, free-ranging hoofed mammal.