Wednesday, November 4, 2015

The West Dried Up 8,200 Years Ago

Nevada Great Basin cavern full of stalagmites studied by MIT researchers.
We know that the American West was once much wetter than it is today; the region is riddled with ancient lake beds and fossilized aquatic creatures. At some point in the last 15,000 years, these inland seas disappeared and turned to desert – but exactly when this happened was not well known.
Until recently: a group of MIT researchers has discovered that the American west must have dried up just about 8,200 years ago – and that it did so relatively rapidly. Read more here

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