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  1. Chemistry

    Space Invaders

    Recent astronomical observations and sophisticated lab experiments portray space as a breeding ground for complex organic molecules, the likes of which may have jump-started life on Earth.

    By Alexandra Goho
  2. Humans

    Letters from the May 1, 2004, issue of Science News

    Skins game I know some people who carefully shield their bodies from the sun with sunscreen and clothing, and their skin is extremely pale. But if tanning acts as a protector (“Sunny Solution: Lotion speeds DNA repair, protects mice from skin cancer,” SN: 3/6/04, p. 147: Sunny Solution: Lotion speeds DNA repair, protects mice from […]

    By Science News
  3. Earth

    Prenatal exposures affect sperm later

    Boys exposed in the womb to hormone-mimicking pollutants may mature into men who produce impaired sperm.