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Science 2 March 2007:
Vol. 315. no. 5816, pp. 1206 - 1207
DOI: 10.1126/science.315.5816.1206a
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News of the Week

ARCHAEOLOGY:
Mystery Towers in Peru Are an Ancient Solar Calendar

Charles C. Mann

On page 1239 of this issue of Science, archaeologists demonstrate that Chankillo, a massive, 2300-year-old ruin 400 kilometers north of Lima, was in part a solar observatory. (Read more.)

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