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The Colorado River starts as mountain snow, but climate change has made it harder to predict how much will flow into streams every year. A new study says springtime sun, rain and plants could make it easier.

Scientists in Colorado are studying snow sublimation, in which snow evaporates before can melt into water. The new data collected will help water managers across the West understand Colorado River supply.

For generations, the siren song of deep powder and steep inclines has lured starry-eyed young people into the time-honored tradition of "ski bumming."The…