The two most abundant forms of power on earth are solar and wind, and they're getting cheaper and cheaper.

The film 'Tapped' illustrates quite clearly how we've been getting 'soaked' for years by the bottled water industry.

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.

You cannot be quiet about things that you know.

The two most abundant forms of power on earth are solar and wind, and they're getting cheaper and cheaper.

People don't want to change. It's hard for people to change and it's hard for businesses to change. If I was running an oil company, I would be resistant to change too.

You can't just do one of the things, because it won't be enough to combat the climate change that we're already starting to experience. It will only get worse.