Long-lost Core Drilled to Prepare Ice Sheet to Hide Nuclear Missiles Holds Clues About a Different Threat

Before the U.S. military tried to hide nuclear missiles under the Greenland Ice Sheet during the Cold War, they asked scientists to determine the stability of the ice that would shelter the warheads. From the secret nuclear-powered Project Iceworm base, a maze of ice tunnels and caves spanning nearly two miles, they drilled down more […]