Scientists Have Discovered an Ancient Lakebed Beneath Greenland’s Ice
Using radar and other ice-penetrating instruments, scientists have detected a “fossil lakebed” preserved beneath the Greenland ice sheet, in what is the first discovery of its kind. Now a basin smothered by a gigantic sheet of ice, this former lake once measured 2,740 square miles (7,100 square kilometers) in size, which is an area comparable…