You began your career as an engineer for Mobil Oil. Now you run one of the most environmentally conscious businesses in the United States. What did you learn at Mobil that you use in your current job?

I would say I just really have a good fundamental knowledge of what happens when you drill for oil. What happens when oil gets in a creek? How do you deal with that? What are the environmental challenges? What's the water quality in the community? These are all things that, when you see them on the ground, you recognize that there is a cost to consumption.