"Opportunities and Challenges on the Way to Sustainability"

If we all listened to Alexander J.B. Zehnder, the world would be a better place. The director of the Alberta Water Research Institute's been at the helm of a program to cut energy usage worldwide down to less than 2,000 watts per person per year. (That’s one sixth what the average American uses now. Really.) Zehnder will speak about his power plans at Cooper Union’s Institute for Sustainable Design.