Rock stars get room keys, I get business cards. Wherever I go I meet innovators of wind power equipment, solar energy operators.

There is definitely global warming, and man is definitely contributing to it. Go out to, say, Montana and talk to some pretty conservative people, hunters and fishermen. They know that in the trout stream they fished when they were growing up, the trout are stressed because the water temperature is going up. They know the hunting season has been delayed because the snows are coming later, and therefore the elk aren't coming down from the mountains.

It's easy to kind of say it's the elite that's putting you down. Well, it wasn't really the elite, technology will do that.

Scientists tend to focus on what they don't know more than what they do know. And there are a lot of things we still don't know about the climate. But we know the difference between climate variability and climate change, and right now the amount of carbon in the atmosphere is well outside the variability pattern - and that's quite quantifiable.

I firmly believe that the next great breakthrough in bioscience could come from a 15-year-old who downloads the human genome in Egypt.

A generation ago [the Democratic Party] stood for progressive change. Now they defend every federal program as if each were sacred. They have become the most conservative force in American politics.

If you don't visit the bad neighborhoods, the bad neighborhoods are going to visit you.