News

  1. Earth

    Oxygen wafted into Earth’s atmosphere earlier than thought

    Date pushed back to 3 billion years ago, suggesting photosynthesis had evolved by then.

    By Jessica Shugart
  2. Psychology

    Mental rotation gears up by age 5 for both boys and girls

    Kid-friendly test suggests that the ability to visualize objects from different angles starts early.

    By Bruce Bower
  3. Health & Medicine

    Dextrose rub helps newborns with low blood sugar

    Massaging the sugary gel into babies’ mouths may lessen the need for intravenous infusions of glucose, a study shows.

    By Nathan Seppa
  4. Life

    Killer cells trained on leukemia may protect some people

    Immune system seems to remember cancer in people who've never had it, a new study suggests.