NOVA | A Strict Carbon Diet
 NARRATOR: Saul Griffith is an engineer in San Francisco and a MacArthur "genius" grant winner. He is also a bit excessive when it comes to trying to figure out all the ways in which his life consumes energy.
SAUL GRIFFITH: I really wanted to understand the individual side of climate change. So I quite literally counted the energy used in every single aspect of my life. In some significant sense, I can tell you my carbon footprint right down to my last pair of underwear.