Stephen doesn't understand why the FDA would crack down on an unregulated heavy metal that you spray in your nose and can cause permanent damage. (05:08)
Like a danger pig rooting out fear truffles, Stephen profiles Mark Shuey, creator of the Cane Fu combat system turning America's seniors into killing machines. (04:39)
Stephen speaks with union leader Andy Stern about insurance and the growing gap between the rich and the poor, and suggests robots as a plan for America's future. (6:36)
Ken Burns believes if America didn't have national parks, the Grand Canyon would be lined with mansions and Yosemite would be a gated community. (05:30)
Stephen dismisses Stephen Hawking, interviews Colorado Congresswoman Diana DeGette, and determines what lessons from Hurricane Katrina we can ignore this hurricane season. (0:34)