National Geographic : 2005 Oct
NATIONAL GEOGRAPHIC RESEARCH AND EXPLORATION GRANTEE Neal Lopinot Archaeologist Missouri State University "We have practically the entire prehistoric record of North America in this one site." Missouri's Sac River flows over the broken halves of an unfinished spearpoint crafted some 13,000 years ago and discovered at a near by dig site dubbed Big Eddy for the river's potent swirls. Researchers have found even older artifacts that may date back 14,600 years. If true, it would mean people lived here a thousand years before the arrival from Asia of the Clovis people, long thought to be the first Americans. Workers at the site must dig fast to learn more: Periodic surges of water from an upstream hydroelectric dam are washing away Big Eddy's remaining clues.