National Geographic presents this insightful documentary examining the awe-inspiring power of nature. Travel across the globe to witness the stunning spectacle of such natural disasters as earthquakes, volcanoes and severe weather. From riding with storm chasers as they track a tornado to getting in the path of a fiery flow of lava, the program offers a gripping─and safe─look at the world's scariest catastrophes. 40 min. Standard; Soundtrack: English; featurettes; "making of" documentary; photo gallery.