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Published online 16 June 2005 | Nature | doi:10.1038/news050613-7
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Deserts set to expand
World's poorest must change lifestyles as Earth dries up.
Many of the world's dry regions, currently home to some 2.1 billion people, are in danger of becoming useless for growing food, according to the latest in a series of reports on the world's ecosystems.
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