Jeffrey Katzenberg; Bill McKibben

Dreamworks C.E.O. Jeffrey Katzenberg reflects on Walt Disney, working with David Geffen and Steven Spielberg, and the future of the movie business. Environmentalist Bill McKibben shares his book, "Eaarth: Making a Life on a Tough New Planet," in which he contends that we are already living on a different planet due to environmental damage, hence the extra "a" in "Eaarth."