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Science 2 January 2009:
Vol. 323. no. 5910, p. 26
DOI: 10.1126/science.323.5910.26
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News of the Week

PLANETARY IMPACTS:
Did the Mammoth Slayer Leave a Diamond Calling Card?

Richard A. Kerr

In this issue of Science (p. 94), a group of nine researchers presents the latest evidence for a cosmic catastrophe just 12,900 years ago: transmission electron microscopy showing nanodiamonds from the geologic moment of the putative catastrophe.

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