News

  1. Humans

    Mouse Mourned: Yoda dies at age 4

    An age-defying laboratory mouse known as Yoda died peacefully in his cage in Ann Arbor, Mich., on April 22, at the age of 4 years and 12 days.

    By Ben Harder
  2. Health & Medicine

    Unsettling Association: Dental X rays linked to low-birth-weight babies

    Getting dental X rays while pregnant might increase a woman's risk of giving birth to a low-birth-weight baby.

    By Nathan Seppa
  3. Earth

    Harm from Plastic Additive Challenged: Early exposure shows no ill effects

    Presumed exposure shortly after birth to a chemical ingredient in plastics shows no evidence of disrupting development in people, according to a small study of teens who, as newborns, received intensive medical care involving plastic hospital equipment.