I think the greatest challenge in environmentalism and the most rewarding challenge is trying to figure out how humans can meet their needs while protecting the environment.

Why has it seemed that the only way to protect the environment is with heavy-handed government regulation?

I was a little too young to be a hippie.

In Washington, there's always an effort to label people.

I started out as a Democrat.

My schedulers keep getting driven crazy by the fact that they can't fit hikes in my schedule.

I spend a year at the Hoover Institute at Stanford, researching market approaches to air pollution control.