National Geographic Digital Media has acquired the global rights to intrepid storm chaser Mike Theiss’ powerful footage of Hurricane Katrina’s wrath. Theiss, who has repeatedly risked his life to capture nature’s raw power, shot much of the now-familiar imagery that seized the nation’s attention during the disaster. To view the footage, go to video.msn.com and search for "Extreme Katrina" under "National Geographic." Contact the company for pricing.