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Science 7 December 2007:
Vol. 318. no. 5856, pp. 1540 - 1543
DOI: 10.1126/science.318.5856.1540
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News Focus

ARCHAEOLOGY:
The Vanishing Fremont

Keith Kloor

What forced the Fremont Indians into sky-high cliff dwellings 1000 years ago, and why did they disappear a few hundred years later? A rugged Utah canyon yields new clues.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)