Friday, December 30, 2011

Does Pollution Make Storms Worse?

National Geographic reports on a study of 15 years of North American storm data:
Tornadoes and hailstorms occurred at a rate of about 20 percent above average during the middle of the week. In contrast, the phenomena occurred at a rate of roughly 20 percent below average on the weekend.
The only obvious explanation is pollution, especially from auto exhausts, which is greater during the week.

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