By Ben Harder
In the next half century, rivers and streams in some parts of the world will diminish in flow, while waterways elsewhere rise in output, according to a new analysis of climate simulations.
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Drying could contribute to droughts and wildfires, for example, in the western United States. Eastern North America and other increasingly wet regions may face excess floods, says hydrologist Christopher Milly of the U.S. Geological Survey in Princeton, N.J.