Merced Sund-Star: As the climate warms, sources of the water so critical to life everywhere on Earth are drying up. By the end of this century, communities dependent on fresh water from mountain-fed rivers could see significantly less water, according to a new climate model recently released by University of California researchers. For example, people who get fresh water from the Kings River could see a 26 percent decrease in river flow. Why? Think of the environment to which humans are accustomed as a huge jigsaw...