If we were driving pure hydrogen automobiles, that automobile would actually help clean up the air because the air coming out of the exhaust would be cleaner than the air going into the engine intake.

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.

When I was a kid, we never heard of smog, ozone depletion, acid rain, green house gasses.

Pollution from human activities is changing the Earth's climate. We see the damage that a disrupted climate can do: on our coasts, our farms, forests, mountains, and cities. Those impacts will grow more severe unless we start reducing global warming pollution now.

Today's business climate is not for me.

In the past, action to combat climate change was viewed largely as running counter to economic growth, with 'going green' implying a sacrifice of prosperity for the sake of the environment. Today, we know better.

Without banging a drum or getting on a soap box, there are always ebbs and tides in this country in terms of the political and social climate that we might be dealing with at any given moment.