Associated Press: Lake Tahoe is among hundreds of lakes worldwide that researchers say are warming due to climate change. The study funded by NASA and the National Science Foundation was presented this week at the American Geophysical Union meeting in San Francisco. The study used 25 years of satellite and on-scene measurements of 235 lakes representing more than half of the worlds freshwater supply. It found that lakes are warming an average of 0.61 degree each decade, raising concerns about freshwater supplies...