'Earth: The Operator's Manual' Chronicles Conservation

Aired: 4/23/2012 | 0:06:34 | Clip
"Earth: The Operator's Manual," a new PBS documentary, chronicles how communities around the world are saving money by conserving energy. Hari Sreenivasan and geologist Richard Alley, who's also the host of the film, discuss the role of human ingenuity in tackling tough global energy problems.