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Science 22 August 2003:
Vol. 301. no. 5636, pp. 1037 - 1038
DOI: 10.1126/science.301.5636.1037
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News Focus

PLANETARY SCIENCE:
Eons of a Cold, Dry, Dusty Mars

Richard A. Kerr

PASADENA, CALIFORNIA--Evidence is mounting that, although water has at times flowed across the martian surface, it has not lingered as a liquid long enough to alter the planet much chemically. Planetary scientists presented findings here last month, and a report in this issue of Science (p. 1084) provides additional support for that notion.

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