New satellite images show the extreme melting that has taken place on the critical Greenland ice sheet, according to researchers. The sheet is a mass of glacial land ice and is an integral part of ...

New satellite images show the extreme melting that has taken place on the critical Greenland ice sheet, according to researchers. The sheet is a mass of glacial land ice and is an integral part of ...

Deep below the thick ice of Greenland lies a labyrinth of tunnels that were once thought to be the safest place on Earth in case of a war. First created during the Cold War, Project Iceworm saw ...