December 7, 2016
Bedrock drilled from deep under the Greenland ice sheet contains evidence that the island was nearly denuded of ice for an extended time during the last million years. The finding suggests that the ice sheet is more vulnerable than thought.
November 16, 2016
Columbia University’s Lamont-Doherty Earth Observatory and other institutions are engaged in a long-term project to sort out what allows trees to survive or not in the borderline environment of the far north.