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  1. Life

    Ants may be the Undead

    Living Argentine ant workers may carry the chemical signatures of death along with an override signal that says, "No undertaker needed yet."

    By Susan Milius
  2. Space

    Another clue in the case for dark matter

    New data from the Fermi spacecraft fail to debunk a sister craft's possible finding of dark matter's mark.

    By Ron Cowen
  3. Health & Medicine

    Swine flu genetics suggest a vaccine is possible

    So far, strain's contagion appears on par with that of a seasonal flu outbreak. Vaccine would be at least months away.

    By Nathan Seppa
  4. Paleontology

    Soft tissue from a dino fossil

    Researchers have uncovered soft tissue and fragments of several proteins from a hadrosaur.