Ancient soil beneath a mile of ice offers warnings for the future
About 400,000 years ago, much of Greenland was ice-free. The overgrown tundra basked in the sun’s rays in the island’s northwestern highlands. Evidence suggests that …
About 400,000 years ago, much of Greenland was ice-free. The overgrown tundra basked in the sun’s rays in the island’s northwestern highlands. Evidence suggests that …