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  1. Tech

    Long-Sought Laser? Standard microchips may gain speedy optical connections

    Although not made exclusively of silicon, a new type of laser runs on electricity and could be mass manufactured in the same factories as silicon microchips are.

    By Peter Weiss
  2. Paleontology

    Flying with Their Legs: Hind feathers made primitive bird nimble

    The earliest-known bird had feathers on its legs that may have provided lift for flight, improving its maneuverability.

    By Julie Rehmeyer
  3. Animals

    Crickets on Mute: Hush falls as killer fly stalks singers

    Within just 5 years, singing has nearly died out among a population of cricket on a Hawaiian island.

    By Susan Milius
  4. Health & Medicine

    UV Blocker: Lotion yields protective tan in fair-skinned mice

    A lotion that stimulates production of the skin pigment melanin induces a deep tan in specially bred laboratory mice.