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This article is part of TPM Cafe, TPM’s home for opinion and news analysis. It was originally published at The Conversation. About 400,000 years ago…
Ancient soil was buried under a mile of ice until excavated during the Cold War.
By Paul Bierman, University of Vermont, and Tammy Rittenour, Utah State University | - About 400,000 years ago, large parts …
Water and sediment pour off the melting margin of the Greenland ice sheet. Jason Edwards/Photodisc via Getty ImagesAbout 400,000 years ago, large parts of Greenland were ice-free. Scrubby tundra basked in the Sun’s rays on the island’s northwest highlands. Evidence suggests that a forest of spruce trees, buzzing with insects, covered the southern part of Greenland. Global sea level was much higher then, between 20 and 40 feet above today’s levels. Around the world, land that today is home to hun
Knowing Greenland’s ice-free history offers a warning for the future as global temperatures rise.