News

  1. Space

    Black hole once glowed brightly

    More than 26,000 years ago, the Milky Way's central black hole suddenly but fleetingly increases its X-ray output.

    By Ron Cowen
  2. Agriculture

    Study decodes papaya genome

    Scientists have added another plant to the genome-sequencing roster: the tropical fruit tree papaya.

    By Rachel Ehrenberg
  3. Earth

    Melt pond falls through ice in Greenland

    A lake of meltwater atop Greenland's ice sheet wedged open a crack in the underlying ice that drained the lake dry.

    By Sid Perkins
  4. Health & Medicine

    Old drug offers new tricks for fighting cancer

    A drug once envisioned as a treatment for cancer might instead prevent the occurrence of colorectal cancer.