ClimateWire: One of the big unknowns of climate change predictions -- and one that has led to considerable contention -- lies in knowing the future of water runoff from the Himalayas. The snow- and ice-rich region supplies water for billions of people in Asia and is sometimes referred to as the Earth's "Third Pole." For years, scientists struggled to understand how precipitation will change in these mountains (ClimateWire, Oct. 24, 2011). They have also had difficulty determining how much glacier melt from the...