News

  1. Humans

    Titanic study: It takes time to do the right thing

    Comparing the Titanic and Lusitania disasters suggests that people in a crisis are more likely to maintain social norms if they have longer to react.

    By Laura Sanders
  2. Health & Medicine

    Hormone may be heart-healthy insulin substitute

    A study in mice finds leptin lowers blood sugar without raising cholesterol.

    By Tina Hesman Saey
  3. Humans

    Facebook users keep it real in online profiles

    College students on Facebook display their real personalities, not reinvented selves, a new study suggests.

    By Bruce Bower
  4. Health & Medicine

    Germs in tobacco are potential source of respiratory infections blamed on smoking

    Tests find hundreds of bacterial species in major cigarette brands.