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A cumulonimbus cloud produces a shaft of rain. Some say Arizona can help address its water challenges by seeding clouds to produce more rain and snow. Photo/University Corporation for Atmospheric Research

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Enhancing the clouds: A solution to Arizona's water challenges?

PHOENIX - Of all the potential solutions offered for Arizona's water challenges, one has a decidedly science fiction feel: planes flying over the Rockies, seeding clouds with aerosolized silver iodide to stimulate rain and snow.