I'm a strong proponent of green tech for anyone who can afford it, having spent the last 40 years working toward achieving a smaller and smaller eco-impact for myself.

I ride my bike for transportation a great deal - occasionally I ride it for fun. But I also have a generator bike that's hooked up to my solar battery pack, so if I ride 15 minutes hard on my bike, that's enough energy to toast toast, or power my computer.

For decades, community colleges have been the backbone of American workforce training. Because they are nimble and closely attuned to local community needs, they are inherently positioned to be influential leaders of the movement for a sustainable economy.

I wanted to be an actor my whole young life. My dad was an actor, obviously - he won an Academy Award, but I had no idea what was involved. I had all the wrong ideas about acting.

I've lived a slower and less expensive life going off the grid, and I'm happier because of 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.

As someone who has grown up living in Southern California, I know all too well about the costs and scarcities of water.