CNN — The ice sheet that covers the northernmost reaches of our planet has expanded and shrunk over the past 2 million years -- but it was thought that Greenland's bitter cold and miles-deep ice had ...

A NASA scientist discovered far more than expected while probing deep beneath Greenland's frozen surface. Chad Greene was attempting to locate the ice bed when he stumbled upon a US Army installation ...

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 the US ...

While flying over Greenland and using advanced radar technology to map the continent's ice, NASA scientists discovered something incredible, an abandoned Cold-War-era U.S. military base 100 feet under ...