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Published online 14 March 2002 | Nature | doi:10.1038/news020311-8

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Dust could settle Himalaya debates

Deserts covered Central Asia as early as 22 million years ago.

The great Asian deserts developed 22 million years ago at the latest, 14 million years earlier than had been thought. So concludes a new analysis of Chinese soils, filling in another piece of the puzzle of the Himalayas' birth.

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