News

  1. Health & Medicine

    Uranium, the newest ‘hormone’

    Animal experiments indicate that waterborne uranium can mimic the activity of estrogen, a female sex hormone.

    By Janet Raloff
  2. Earth

    Can phthalates subtly alter boys?

    Researchers have linked a mom's exposure to phthalates with a genital marker in boys suggesting a subtle feminization of their reproductive organs.

    By Janet Raloff
  3. Health & Medicine

    Heavy traffic may trigger heart attacks

    Exposure to traffic can dramatically increase a person's risk of having a heart attack soon afterward.

    By Diana Parsell
  4. Planetary Science

    Riddles on Titan

    Two puzzles have emerged from the Cassini spacecraft's first close flyby of Saturn's largest moon, Titan.