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Science 28 April 2000:
Vol. 288. no. 5466, p. 625
DOI: 10.1126/science.288.5466.625a
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Books

ASTROBIOLOGY:
All Alone After All?

A review by Christopher P. McKay

Rare Earth Why Complex Life Is Uncommon in the Universe
Peter D. Ward and Donald Brownlee
Copernicus (Springer-Verlag), New York, 2000. 361 pp. ISBN 0-387-98701-0.

The authors, a paleontologist and an astronomer, argue that while life at the level of microbes may be common in the universe, life at the level of even simple animals is likely to be extremely rare.
The author is in the Space Science Division, Mail Stop 245-3, Moffett Field, CA 94035, USA. E-mail: cmckay{at}arc.nasa.gov

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