We have lots of other problems with plastic in our oceans. There are five different big gyres of plastic out in the ocean. There are problems with air pollution around the country that we need to deal with, and around the world. We have a great many problems to overcome, so I work on a lot of different boards trying to help in those important areas.

There are many different ways now to experience nature. Get out there and hike.

By 1990 I went back to no gasoline; I was just riding around on my bike, taking the bus. I had a tiny little electric car that didn't go very far or very fast. People thought I'd lost my mind. Even my own family thought I'd lost my mind.

Experience nature. Then you know why it's worth protecting.

When we destroy something crated by man we call it vandalism but when we destroy something by nature we call it progress.

For my own health, I thought it was better to eat a plant based diet. I'm going to be 60 soon and I have boundless energy and I feel really good, so I'm all for it.

I bought my first electric car in 1970. Its top speed was 15 mph and it had just a 15 mile range - it was essentially a golf cart with a windshield wiper and a horn.