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  1. Tech

    EPA council sets priorities

    The Environmental Protection Agency's Science Policy Council has outlined the agency's nanotechnology-research needs.

    By Aimee Cunningham
  2. Health & Medicine

    Emerging bug pilfers DNA

    A virulent bacterium invading U.S. hospitals and the battlefields of the Middle East pilfers its genes from other bacteria.

    By Brian Vastag
  3. Chemistry

    Scrubbing troubles

    Triclosan, an antibacterial agent found in many soaps, may increase a person's exposure to a potentially toxic chemical.

    By Aimee Cunningham
  4. Earth

    Hibernation concentrates chemicals

    Some pollutants accumulate in grizzlies during the bears' hibernation.

    By Ben Harder
  5. Astronomy

    Dance of the dead

    Astronomers have found what appears to be the fastest-spinning stellar corpse known.