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  1. Life

    Rabies resistance arises in backwater thick with vampire bats

    Residents of two remote Peruvian communities appear to have survived infection by the deadly virus.

    By Rachel Ehrenberg
  2. Astronomy

    Curiosity to look for habitable environs

    Set to land on Mars August 5, NASA mission will search for signs that the planet could support life, now or long ago.

    By Nadia Drake
  3. Life

    Select cells appear to spawn tumors

    Separate studies support the theory that stem cells cause cancers to emerge and recur.

    By Tina Hesman Saey
  4. Health & Medicine

    Alzheimer’s protein could help in MS

    A-beta, the same molecule that has been tied to dementia when it accumulates in the brain, appears to reduce damage when introduced to the bodies of mice with symptoms of multiple sclerosis.