Saturday, June 18, 2011

The Great Lakes Are Gifts of the Glaciers

Imagine this if you can.  Glaciers one to nearly two and a half miles high bulldozed their way through our continent four times.  Slowly, ever so slowly they ground across the landscape scooping out old riverbeds and then slowly melted back north over thousands of years leaving freshwater of the Great Lakes in their wake.  Since we do not expect another Ice Age any time soon, we need to care for the glacial water left to us in the Great Lakes and in the groundwater.

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