It takes less land to grow a pound of broccoli than it does a pound of beef. Less land to grow a pound of grain than a pound of beef. Less water, less energy.

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.

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.

This is a deeply spiritual issue...Do we want to spend more time trying to care for our fellow man or do we want to just pursue more virtual reality? That's the issue before us.. and it's being played out in the world of the environment.

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.

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.

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