American democracy is supposed to be the paradigm for the rest of the world.

I was interested in the environment from when I was a little kid. I spent most of my time hunting and fishing and kayaking.

Resurrecting American democracy is vital to averting climate catastrophe. We must first repeal the Supreme Court's Citizens United ruling, which has flooded elections with billions of oily petrodollars from carbon tycoons.

Everyone knows that we're doing a science experiment with Earth. And the No. 1, No. 2, No. 3, No. 4 contributors to it are the mining and burning of coal.

Investigative journalism has been relegated to a very, very tiny space in America. We don't really have much investigative journalism left. And the last refuge for it is documentary filmmaking.

Corporations are a good thing. But corporations should not be running our government... They have driven the American economy since its founding, and the prosperity of our country is largely dependent on the free operation of corporations. But some corporations don't want free markets, and they don't want democracy. They want profits.

We know more about Tom [Cruise] and Katie [Holmes] than we do about global warming. We're the most entertained, least informed people in the world.