RE: It will be very interesting to your grandchildren, etc. (nm)
Posted on: February 13, 2017 at 14:49:21 CT
MOCO SON MU
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Learned this morning that the water level in the Great Lakes dropped approximately 50 meters from today's level about 8,000 years ago. It was not do to a period of glaciation either. It was do to a period of a warmer drier climate. It appears that warming and cooling periods are typical cycles in earth's history.