This much is certain: We have the power to damage the sea, but no sure way to heal the harm.

It's taken us a short time to change the nature of nature. In my lifetime, more change than during all preceding human history put together.

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.

The ocean is our life support system. No blue, no green. It's really a miracle that we have got a place that works in our favor.

The diversity of life on Earth, generally, is astonishing. But despite those large numbers, it's also important to recognize that every species, one way or another, is vulnerable to extinction. And in our time on Earth... our impact on the diversity of life has been profound.

I personally have stopped eating seafood.

The burning of fossil fuels has altered the amount of carbon dioxide in the atmosphere so rapidly and so abundantly that now, we are driving not just the warming trend, not just the sea level rise that is a consequence of the warming trend that is melting polar ice and alpine ice, but also [ocean acidification].