Uncategorized

  1. Health & Medicine

    Ulcer Clue? Molecule could be key to stomach ailment

    A protein called Ptprz binds with a bacterial toxin to produce ulcers in mice, possibly revealing a mechanism for the disorder.

    By Nathan Seppa
  2. Astronomy

    Death of a pioneer

    Pioneer 10, the first spacecraft to reach the fringes of the solar system, appears to have sent its last feeble signal to Earth on Jan. 22.

    By Ron Cowen
  3. Health & Medicine

    Light could be therapy against blindness

    Beaming red light at rats soon after they've drunk methanol partially protects their eyes against that chemical's blinding effects.

    By Ben Harder
  4. Astronomy

    Cosmic Doomsday Scenario: Phantom energy would trigger the Big Rip

    According to a new model, the universe may end with a Big Rip—every galaxy, star, planet, molecule, and atom torn asunder and the cosmos ceasing to exist some 21 billion years from now.