We've all heard about counting the rings inside a tree trunk to discover its age. But there are other ways to determine a ...
Live Science on MSN
Indigenous Americans dragged, carried or floated 5-ton tree more than 100 miles to North America's largest city north of Mexico 900 years ago
Researchers have determined the age and origin of a massive tree that was found at the pre-Columbian city of Cahokia in what ...
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