Uncategorized

  1. Animals

    The truth is, frogs bluff and crabs cheat

    Two research teams say they've caught wild animals bluffing, only the second and third examples (outside of primate antics) ever recorded.

    By Susan Milius
  2. Astronomy

    Milky Way feasts on its neighbors

    Three new studies reveal that Earth's home galaxy indulged in cannibalism to assemble its visible halo, the diffuse distribution of stars that surrounds the dense core and disk of the Milky Way.

    By Ron Cowen
  3. Math

    Tilt-A-Whirl Chaos (I)

    Tilt-A-Whirl. Sellner Manufacturing Co. Schematic drawing (top view) showing the Tilt-A-Whirl’s geometry. Much of the fun of an amusement park ride results from its stomach-churning, mind-jangling unpredictability. The Tilt-A-Whirl, for example, spins its passengers in one direction, then another, sometimes hesitating between forays and sometimes swinging abruptly from one motion to another.