News

  1. Astronomy

    A fast radio burst’s unlikely source may be a cluster of old stars

    The burst’s origin in a globular cluster suggests that not all these enigmatic blasts come from young stellar populations.

    By Mara Johnson-Groh
  2. Paleontology

    The Age of Dinosaurs may have ended in springtime

    Fossilized fish bones suggest that the massive asteroid strike at the end of the Cretaceous Period occurred during the Northern Hemisphere’s spring.

    By Sid Perkins
  3. Genetics

    Africa’s oldest human DNA helps unveil an ancient population shift

    Long-distance mate seekers started staying closer to home about 20,000 years ago.

    By Bruce Bower
  4. Planetary Science

    An ancient impact on Earth led to a cascade of cratering

    For the first time, scientists have discovered clusters of craters on Earth that were formed by the impacts of material thrown out of a larger crater.