(PhysOrg.com) -- For more than a century and a half, scientists and tourists have visited massive animal-shaped mounds, such as Serpent Mound in Ohio, created by the indigenous people of North America. But few animal effigy ...
Archaeology
Mar 29, 2012
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(PhysOrg.com) -- Under the cold clear waters of Lake Huron, University of Michigan researchers have found a five-and-a-half foot-long, pole-shaped piece of wood that is 8,900 years old. The wood, which is tapered and beveled ...
Earth Sciences
Dec 12, 2011
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