Whatever we'll be forced to do later, we should be doing now.

The earth is a tremendous gift. There is nothing else like it in the known universe. I want to leave it the way I found it.

Business has to change the way it does business, or we will make no significant changes in the way we relate to the earth.

When we realize we can make a buck cleaning up the environment, it will be done!

Coming back to a television series puts you back in the limelight and gives you a platform for your ideas. If you're not acting on a series, you don't get the ability to communicate to people.

If we had a hydrogen economy worldwide, every nation on earth could create its own energy source to support its economy, and the threat of war over diminishing resources would just evaporate.

We're the only species that have crapped up the planet and the only species that can clean it up.