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Nature 413, 664-666 (18 October 2001) | doi:10.1038/35099718
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The outrageous hypothesis
Larry O'Hanlon1
Abstract
For over a quarter of a century, planetary scientists have believed that water helped to shape the surface of Mars. Now one geophysicist is trying to prove them wrong. Larry O'Hanlon reports.
When it comes to deciding whether or not liquid water once flowed over the surface of Mars, most geologists are happy to believe the evidence of their own eyes. The surface of the red planet is marked by channels and gullies that are virtually identical in form to water-created landscapes on Earth1.
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