News

  1. Animals

    Frogs Play Tree: Male tunes his call to specific tree hole

    Borneo's tree-hole frog may come as close to playing a musical instrument as any wild animal does. [With audio file.]

    By Susan Milius
  2. Health & Medicine

    Jarring Result: Extreme biking can hurt men’s fertility

    Men who maintain grueling mountain-bicycling programs are apt to have lower sperm counts than nonbikers are.

    By Nathan Seppa
  3. Anthropology

    Script Delivery: New World writing takes disputed turn

    Researchers announced, to considerable controversy, that inscriptions found on artifacts at an Olmec site in southeastern Mexico represented the earliest known writing system in the Americas.

    By Bruce Bower
  4. Health & Medicine

    Keeping the beat

    Muscle cells taken from embryonic rats and put into an adult rat's heart can transmit the electric signals that govern the heartbeat.