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Great Lakes sinkholes a window to ancient life

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Scientists studying submerged sinkholes in the Great Lakes off the coast of northern Michigan have stumbled onto something they never expected to find: life-forms akin to those found in some of Earth's most extreme environments.

As groundwater leaks upward into Lake Huron, it redissolves an ancient seabed and creates a salty underwater environment that is supporting mats of primitive purple microbes -- cousins to bacteria that live in deep-sea hydrothermal vents and ice-locked Antarctic lakes.  more...


Environment  History  
 
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