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Science 22 December 2000:
Vol. 290. no. 5500, pp. 2239 - 2242
DOI: 10.1126/science.290.5500.2239
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News Focus

GEOLOGICAL SOCIETY OF AMERICA MEETING:
Geologists Pursue Solar System's Oldest Relics

Richard A. Kerr

RENO, NEVADA--Last month, the Geological Society of America held their annual meeting here. Offerings included claims for the oldest known examples in a class: the oldest scrap of ocean crust, the oldest sample of Earth, and the oldest trace of life--which happens to come from Mars.

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