Fortunately, reducing light pollution is easy. Plus, it's good for national parks and good for America generally.

Ozone smog represents the single most challenging pollution problem the country is facing.

In ways we've looked at pollution in the past, coal has cleaned up. But the bigger problem we face now is carbon dioxide, which clean coal plants still emit.

Most of our pollution control in America will come through good old-fashioned Wall Street financing.

How could Captain America not have been a reaction to the times. The Nazis were a menace, an evil in the world. The US hadn't yet entered the war when Jack and I did Captain America, so maybe he was our way at lashing out against the Nazi menace.

The protection of refugees in some parts of the world, especially in Latin America, is critically undermined by the lack of sufficient international visibility and financial support.