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.

There really wasn't an environmental movement 30 years ago. The Sierra Club national office in 1969 consisted of one full-time volunteer.

Earth Day gathered up those strands, and dozens more, and knitted them together in the public consciousness as "environmental" issues. The nation was pretty startled when 20 million people hit the streets. Congress, which had adjourned for the day to go back to its districts, was blown away.

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.

I would love to see a fundamental re-thinking of whether we truly want to be the world's largest debtor nation, feeding an insatiable desire for mall-crawling with cheaply made crap from all over the world.

There are a few obvious consequences and perhaps one subtle possibility. One obvious thing is that, to stimulate the economy, President Obama has committed to creating millions of green jobs that will leave a legacy - much as Roosevelt's public works did during the new deal.

We need a firm cap on carbon emissions from fossil fuels. No coal, oil, or gas could enter the economy until the buyer had a permit. All permits would be auctioned by the federal government, and the number of permits auctioned would be decreased by three percent per year. Permits could be traded, but they could not be created out of whole cloth by companies that plant forests or dump iron filings at sea.