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.

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

If you don't generate tension in the film to begin with... you can't really make a purse out of a sow's ear, you know.

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.

I feel responsible; I feel I've got to do something that will leave the kids a place where they can live healthy, safe, productive, creative and prosperous lives.

War is usually fought over diminishing resources, particulary those that we perceive to be extremely valuable.