The biggest danger we face is overfishing. We literally could fish out our oceans, some scientists believe, in the next 40, 50, 60 years. We are fishing out the top of the food chain, and it's pretty crucial because about 200 million people depend on fish and fishing for their livelihood, and about a billion people, mostly in poorer countries, depend on fish for their protein. So this is a big problem. Good news is, it's fixable.

We are so arrogant, we forget that we are not the reason for evolution, we are not the point of evolution. We are part of evolution. Unfortunately, we believe that we've been created to dominate the planet, to dominate nature. Ain't true.

I am forever grateful for Cheers.

I feel very strongly that you can't just beat people up anymore; you have to work hand in hand and find ways to compromise, and get big business involved, because it won't happen otherwise.

I don't get a sense that Cheers is revered the way it should be by [younger viewers]. In my mind, it's a show that should always, always, always be in the pantheon. But can it ever mean to future generations what it meant to us?

There should be a list of people who can and cannot clone themselves.

We have a project with Unocal here in Los Angeles, where we as an environmental organization, the oil company, and the state all get together to promote the recycling of used motor oil.