News

  1. Earth

    Early animals couldn’t catch a breath

    Low levels of oxygen may have hindered evolution of animal life hundreds of millions of years ago.

    By Rachel Ehrenberg
  2. Health & Medicine

    Heavy milk drinking may double women’s mortality rates

    In a study of 60,000 Swedes, drinking three or more classes of milk a day was associated with higher chances of death, cancer and hip fractures.

    By Nathan Seppa
  3. Health & Medicine

    Harmless bacterium edges out intestinal germ

    Researchers treated C. difficile infections in mice with a closely related bacteria that blocks C. difficile growth.

    By Kate Baggaley
  4. Genetics

    Men who lose Y chromosome have high risk of cancer

    Losing the Y chromosome in blood cells may bring on cancer and shorten men’s lives.