July 18, 2011
EARTH: Great Lakes Geologic Sunken Treasure
Shipwreck enthusiasts find a bounty of nautical relics preserved in the chilly depths of the Great Lakes. But only within the last decade have explorers and scientists begun to reveal the secrets of a much different - and much more ancient - sunken treasure in Lake Huron: sinkholes.
As EARTH explores in its August feature "Great Lakes Geologic Sunken Treasure," researchers have recently begun exploring several mysterious sinkholes in Lake Huron. These pockets of water teem with microbial life similar to that found around deep ocean hydrothermal vents or beneath ice-covered Antarctic lakes, not the kinds of microorganisms normally found in our own backyards.
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