If we've learned anything from all the hurricanes, earthquakes, terrorist attacks and pending fatwas -- you need to be prepared for an emergency (4:59)
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)
Gideon Yago thinks it's partially the viewer's fault that music videos are contributing to the fragmentation of American culture. Stephen thinks he's blaming America first. (6:25)