News

  1. Planetary Science

    Meteor explosions like this year’s Russian fireball more common than thought

    Chelyabinsk-sized rocks may come to Earth every 30 years, on average.

    By Andrew Grant
  2. Life

    Newborns’ weak immunity may allow helpful bacteria to gain a foothold

    Though infant immune systems raise risk of infection, they also allow good microbes into the body, study in mice shows.

    By Nathan Seppa
  3. Neuroscience

    Autism may be detectable in baby’s first months of life

    Infants later diagnosed with an autism spectrum disorder lose tendency to gaze at others’ eyes during first half-year, researchers find.

    By Laura Sanders
  4. Astronomy

    Billions and billions of Earth-sized planets call Milky Way home

    Using Kepler data, astronomers estimate that a sizeable fraction of the galaxy’s sunlike stars have Earth-sized planets that could support liquid water.