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  • Need to Know

Need To Know | Political Storm Over Tornadoes | PBS

Duration: 06:17
Program: Need to Know #155
Broadcast Date: May. 27, 2011

In the wake of the deadliest tornado season in decades, Need to Know interviews meteorologist Harold Brooks of the National Severe Storms Laboratory in Norman, Oklahoma, to see whether there is any validity to the claim that climate change is a contributing factor.

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Post Date: May 28, 2011