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  1. Physics

    Piddly Puddle Peril: Little water pools foil road friction

    Physicists have proposed an explanation for how even slight wetness can cut road-to-rubber friction.

    By Peter Weiss
  2. Plants

    Give and Take: Plant parasites dole out genes while stealing nutrients

    New evidence suggests that parasitic plants can transfer their own genes into host plants.

    By Christen Brownlee
  3. Health & Medicine

    Vaccine Stretch: Smaller dose packs punch against flu

    A fraction of the standard dose of flu vaccine appears to grant people immunity to influenza if injected into the skin rather than in the muscle of the upper arm.

    By David Shiga
  4. Animals

    Elephant Voices

    Elephants are highly social animals and have a well-developed method of communicating with each other.