News

  1. Planetary Science

    An asteroid may have exploded over Antarctica about 2.5 million years ago

    Tiny spherules of rock found in Antarctic ice may point to the oldest known “airburst,” or midair disintegration of an incoming asteroid.

    By Katherine Kornei
  2. Chemistry

    The smallest known molecular knot is made of just 54 atoms

    Chemists are still trying to figure out why this combination of gold, phosphorus, oxygen and carbon atoms resulted in a molecular knot in the first place.

    By Anna Gibbs
  3. Planetary Science

    Bacteria that can make humans sick could survive on Mars

    Experiments suggest that common illness-causing microbes could not only survive on the Red Planet but also might be able to thrive.