One of the most frightening elements of natural disaster is that more often than not they strike without any warning whatsoever. Nova taps into this fear and fascination in this video. Join the Nova stormchasers as they track down tornadoes sweeping across the country. Learn what causes a tornado and what scientists can do to help predict them before they strike. Laura Mahnken, Rovi
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One of the most frightening elements of natural disaster is that more often than not they strike without any warning whatsoever. Nova taps into this fear and fascination in this video. Join the Nova stormchasers as they track down tornadoes sweeping across the country. Learn what causes a tornado and what scientists can do to help predict them before they strike. Laura Mahnken, Rovi
Read Less