There were Jellyfish in Wisconsin

Digging up beaches to accelerate the end of humanity

About six hundred million years ago, a vast shallow sea covered the land we call Wisconsin. The climate was tropical, as Wisconsin had drifted down near the Equator. If you were to drive east back then, on Interstate 94 from Minneapolis, MN to Eau Claire, WI, you would have been underwater, sometimes dune-buggying on a…