Long-lost Core Drilled to Prepare Ice Sheet to Hide Nuclear Missiles Holds Clues About a Different Threat Plant remnants frozen beneath 4,000 feet of ice show that most of Greenland’s ice sheet melted about 1 million years ago, in a climate like today’s. By Bob Berwyn
Antarctic Ocean Reveals New Signs of Rapid Melt of Ancient Ice, Clues About Future Sea Level Rise By Bob Berwyn
The Big Picture: What Scientists Do and Do Not Know About Climate Change By Mark Pagani, John Wettlaufer, Jeffrey Park and David Bercovici