News

  1. Oceans

    Robotic subs reveal thicker Antarctic sea ice

    New measurements by robotic subs suggest that scientists have underestimated Antarctic sea ice thickness.

    By Thomas Sumner
  2. Physics

    Negative mass might not defy Einstein

    Repulsive matter could have played a role in the early universe, a computational study finds.

    By Andrew Grant
  3. Chemistry

    Radioactive fuel turns to goo during nuclear meltdown

    Experiments reveal the atomic rearrangements that occur within uranium dioxide when nuclear reactors fail.

    By Beth Mole
  4. Archaeology

    Barley elevated Central Asian farmers to ‘the roof of the world’

    Hardy western crops allowed villagers to settle in the cold, thin air atop the Tibetan Plateau.