Uncategorized

  1. Physics

    Loud Loop: New explanation of whip-snapping unfurls

    The wake of a loop zooming along a whip may silence the faster-moving tip so the loop actually causes the whip's loud bang.

    By Peter Weiss
  2. Health & Medicine

    Eat Broccoli, Beat Bacteria: Plant compound kills microbe behind ulcers and a cancer

    A chemical abundant in broccoli and certain other vegetables kills ulcer-causing Helicobacter pylori bacteria in the laboratory and inhibits stomach cancer in mice.

    By Ben Harder
  3. Animals

    Sniff . . . Pow! Wasps use chemicals to start ant brawls

    Wasps sneak around in ant colonies thanks to chemicals that send the ants into a distracting frenzy of fighting among themselves.