When Arnold Schwarzenegger goes to his reward - how's that? That's a crack, but I treat Governor Schwarzenegger well in my book. He's done such great work in California; we'll forgive him one personal habit. Everybody should have one not-totally-CO2-friendly habit they can be forgiven for. So we'll forgive him that one.

The need to help spread democracy and the ability to do that will be much greater if we break this addiction to oil, which gives the oil princes and sultans the power in the Mideast.

I'm sure that in the fullness of time we'll learn that one or more of these seemingly promising technologies were dead ends. And that's the nature of innovation, and that's why we should spread our bets; we should not put our eggs in any one basket. Some of these will be grand successes, some of them will be average, and some of them will be abject failures.

If this ice melts in Greenland it can shut down the Gulf Current.

We can't tell China what to do if we don't do it ourselves. You don't inspire someone to take an action by refusing to take it yourself. We are in a race to be the dominant clean-energy provider to the world. Maybe this goes without saying: We've got to get China into an international protocol and the magic words are "common responsibility with differentiated action."

We could never light another match, and if China continues to build one coal-fired power plant a week, we are doomed. China is going to have to have new technologies made available to it to stop this. They're not going to live in poverty.

Renewable energy also creates more jobs than other sources of energy - most of these will be created in the struggling manufacturing sector, which will pioneer the new energy future by investment that allows manufacturers to retool and adopt new technologies and methods.