News

  1. Earth

    Contrails forecast on the horizon

    Studies of the contrails generated by jets flying high over Alaska may lead to improved techniques for predicting the formation of the artificial clouds, which some scientists suggest have a warming effect on Earth's climate.

    By Sid Perkins
  2. Earth

    Warm arctic summer melted much ice

    Satellite observations of the Arctic Ocean show that the amount of sea ice there this year was the lowest it's been in more than 20 years.

    By Sid Perkins
  3. Earth

    Warm arctic summer melted much ice

    Satellite observations of the Arctic Ocean show that the amount of sea ice there this year was the lowest it's been in more than 20 years.