Join storm chasers, scientists and video camera amateurs as they film the fury of tornadoes. In the first part of the video, it features scientists using "Project Vortex" as they place instruments around the twisters to record data and following storm chasers with their best video sequences on the dangerous cyclones. In part two, watch as amateurs capture video sequences and witness the damage after the storm is over. It also features a countdown of the top ten most destructive video sequences.

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