It's fun to be a little bit different in the world, to make a few new trails of your own.

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.

The people of the future will say, 'meat-eaters!' in disgust and regard us in the same way that we regard cannibals and cannibalism.

We don't have to sacrifice a strong economy for a healthy environment.

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.

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.

Practically every environmental problem we have can be traced to our addiction to fossil fuels, primarily oil.