News

  1. Materials Science

    Like a balloon, peculiar magnet grows and shrinks

    A recently discovered alloy of iron and gallium can expand and contract like a balloon when exposed to a magnetic field.

    By Andrew Grant
  2. Archaeology

    Earliest known stone tools unearthed in Kenya

    East African discoveries suggest stone-tool making started at least 3.3 million years ago.

    By Bruce Bower
  3. Astronomy

    Peeks into early life of supernovas show how to blow up a star

    Multiple supernovas show off some of the ways a star can explode.

    By Christopher Crockett
  4. Health & Medicine

    Snagging blood clots upgrades stroke care

    A new device threaded up to the brain via catheter can unblock vessels in cerebral arteries, studies show.