News

  1. Planetary Science

    Lots of red dust, but not much noise

    In space, no one can hear you scream, but a new analysis suggests that it's pretty quiet on Mars, too.

    By Sid Perkins
  2. Health & Medicine

    Salmonella may join fight against cancer

    Salmonella modified to remove its virulence works as a cancer vaccine, tests in mice show.

    By Nathan Seppa
  3. Earth

    Asian sediments betray age of nearby desert

    Grains of silt embedded in thick sediments of northwestern China may settle a debate about the age of the Taklimakan Desert.

    By Sid Perkins
  4. Health & Medicine

    Lavender Revolution: Plant essences linked to enlarged breasts in boys

    Two natural ingredients in many hair- and skin-care products act like a female sex hormone and can cause abnormal breast development in boys.