News

  1. Planetary Science

    Moon spray

    The Cassini spacecraft has found conclusive evidence that the south pole of Saturn's moon Enceladus spews jets of icy particles into space.

    By Ron Cowen
  2. Earth

    Beyond the ABC’s: North Atlantic posts record hurricane season

    The 2005 hurricane season in the North Atlantic shattered a number of records, including several that were decades old.

    By Sid Perkins
  3. Humans

    Stem Cell Controversy: Scientist is retracting landmark finding

    A South Korean researcher who claimed to have cloned the first human embryonic stem cell is now asking that some of his published work be retracted.

    By Nathan Seppa
  4. Chemistry

    Mixed Message: Pheromone blend sends signal

    The meaning of a chemical message released by male Asian elephants depends on the chemical's total concentration as well as on the balance of the chemical's two forms.