Cloud Seeding
In this photo taken Thursday, Nov. 12, 2009, clouds are seen over the Sierra Nevada near Roger's Flat, Calif. Water from the melting winter snowpack feed through hydroelectric dams along the Feather River, operated by the Pacific Gas & Electric Co. Faced with crippling droughts, governments and utilities throughout the western states are turning to cloud seeding as way to get more rain and snow out of the clouds. They have asked Congress to invest $25 million a year in cloud-seeding research they say could help advance the science.(AP Photo/Rich Pedroncelli)
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