Lake Huron sinkhole shows secrets of how life evolved on earth
The Middle Island sinkhole in Lake Huron, a few miles off the Alpena coast and 100 feet down, is a perfect simulation for what early earth was like, more than 4 billion years ago.
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Lake Huron sinkhole shows secrets of how life evolved on earth
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Michigan primary: Jocelyn Benson's acceptance speech [FULL]
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