When we held the first Earth Day, everyone said it was a success because of the huge turnout. It was probably the largest planned event across the country.

Under communism, prices were not allowed to reflect economic reality. Under capitalism, prices don't reflect ecological reality. In the long run, the capitalist flaw -- if uncorrected -- may prove to be the more catastrophic.

The sunshine that strikes American roads each year contains more energy than all the fossil fuels used by the entire world.

f the government is going to put money into the automobile sector, it should break up GM and Chrysler as a condition of financial aid, and it should be even-handed in its treatment of start-up firms like Tesla, Miles, Fisker, and others. It would be terrible to kill the entrepreneurs who have taken great risks to bring new automotive technologies to market by pumping tax dollars into the behemoths that have done everything wrong for the last years.

By 1975 - and continuing to today - all Americans came to believe that they had a "right" to a safe, clean, healthy environment. When I grew up, no one seriously criticized the steel mills and paper mills for the deadly stench they produced - that was the smell of prosperity. In the modern society, no one would tolerate such conditions in an American city.

The easiest way to make something cool is to get cool people to do it. Part of this might mean the president has to forget tensions with opponents, or people like Arnold Schwarzenegger who has actually been decent with oil issues. Maybe he needs to pull some of the cool people in and make them model the right behaviors.

Our goal is to turn solar electric technologies into a commodity business like computer chips, and make them ubiquitous in the built environment. I'd couple this with a huge commitment to fundamental research in nanostructure to goose the next generation of more efficient, cheaper, dematerialized cells. And if I'm truly czar, I'd emphasize silicon technologies, as that approach is the one least likely to encounter material constraints in supplying an explosive global demand.