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water polllution prevention china environment olympics
shared by Stephania D on 03 Dec 08
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Though it sounds like a classroom assignment from Hogwarts School of Witchcraft and Wizardry, weather modification programs have been around for more than 50 years.
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The problem is there are too many factors that affect the weather, making naturally occurring phenomena difficult to separate from man-made triggers.
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Determined to prevent rain from dampening the spirits -- not to mention the crowds -- on opening day ceremonies, the government plans to seed any threatening clouds with chemicals to dispel, or at least delay, rainfall.