Dusty snow is making the western drought worse

How to help relieve drought? Limit the growing amount of dust blowing from deserts to mountains, where it melts the snowpack and robs rivers of water.

At about 12,000 feet on Colorado's Loveland Pass, dirty snow patches melt into the river water. Jeff Derry, with the Center for Snow and Avalanche Studies, takes samples of dust on snow.
Photograph by Pete McBride

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