Exploring the Americas' earliest known civilization

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NOON U.S. CENTRAL TIME ON DEC. 22, 2004
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Nature: http://www.nature.com/

NIU Department of Anthropology: http://www.niu.edu/acad/anthro/

Proyecto Arqueologico Norte Chico: http://www.fieldmuseum.org/panc/

The Field Museum: http://www.fieldmuseum.org/

The Science Foundation: http://www.nsf.gov/