If we have a hope of really understanding our place in nature and of carving out a place for ourselves that is sustainable, it's primarily because of the new level of communication. It used to be, 'What you don't have in your mind, you have on your shelf.' But now we have the Web.

We are depleting this immense diversity and abundance of life, and it matters tremendously for the future of the planet.

Any astronaut can tell you you've got to do everything you can to learn about your life support system and then do everything you can to take care of it.

The value of sharks' lives is now widely understood to be more important than their value as products. And when you have sharks in an area, it's a sign of good health. They're top predators, which means they feed on old, sick, and slower fish, keeping an entire population healthy.

With care and protection, with safe havens in the ocean, there is still a good chance that we can turn things around.

There's a vested interest in trying to keep people smoking cigarettes.

We're still under the weight of this impression that the ocean is too big to fail, that the planet is too big to fail.