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Science 17 June 2005:
Vol. 308. no. 5729, p. 1732
DOI: 10.1126/science.308.5729.1732
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News Focus

EARTH SCIENCE:
A Better Atmosphere for Life

Richard A. Kerr

Thirty years ago, geochemists took away the primordial soup that biologists thought they needed to cook up the first life on Earth. Now, some atmospheric chemists are trying to give it back.

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