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Published online 3 July 2001 | Nature | doi:10.1038/news010705-7

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Water cools the world

The Earth's climate depends less on the Sun than we mightthink.

If the Sun got hotter, would we care? Probably not, according to Hsien-Wang Ou of the Lamont-Doherty Earth Observatory in Palisades, New York. Water, he suggests, minimizes the climatic effects of a cooler or warmer sun1.

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