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  1. Planetary Science

    Satellites could detect quakes on Venus

    Strong seismic activity on Venus could cause brief but detectable temperature increases high in that planet's atmosphere.

    By Sid Perkins
  2. Tech

    Body-fluid battery

    A battery that's activated by body fluids such as saliva or urine may one day power devices ranging from disposable home health-care testing kits to emergency radio transmitters that turn on with a lick.

    By Peter Weiss
  3. Health & Medicine

    Protein fingered in rare psychosis

    A protein is pivotal in bringing on the psychotic attacks that beset people with porphyria, a rare inherited disease.

    By Nathan Seppa
  4. Health & Medicine

    When Flu Flies the Coop

    Scientists are tracking the spread of a threatening influenza virus in birds and exploring strategies that could be used to halt a potential outbreak in people before it explodes into a global epidemic.