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

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.

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

Dense overgrown forests and rangelands have grown like a cancer. They need to be treated.

Human beings are going to be relying on natural resources for a long time.

I was a little too young to be a hippie.

Growing up in Denver, I'm sure it started with loving the Colorado mountains.