Episode Detail: Rattlesnake Man; Savage Mountain; Secrets of the Great White Shark - National Geographic Explorer
Included: Host Matt Lauer accompanies a scientist in his never-ending study of rattlesnakes, despite being bitten twice; a single mother risks life and limb in the Himalayan Mountains; the hunting habits of sharks are studied off the coast of northern California. Correspondents: Boyd Matson and Dawn Fratangelo.