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  1. Physics

    Hot stuff

    A plasma-based amplifier bumps up a laser's intensity by an unprecedented 20,000 times.

    By Davide Castelvecchi
  2. Planetary Science

    Neptune’s balmy south pole

    Neptune's south pole is about 10°C warmer than any other place on the planet.

    By Ron Cowen
  3. Plants

    Stalking the Green Meat Eaters

    Pitcher plants in a New England bog hold little ecosystems in their leaves, and also act as indicators of the bog's ecological health.

    By Susan Milius

  4. 19887

    In Rio Linda, Calif., on Oct. 4, 1957, my seventh grade classmates and I (the front edge of the baby boom) were busily clipping news accounts of Sputnik for our daily current-events assignment.