Never again will we have this good a chance as we now have to find an enduring place for ourselves within the natural systems that keep us alive. It's a sweet spot in history. That's why this is such a critical time.

There's plenty of water in the universe without life, but nowhere is there life without water.

The Exxon Valdez spill triggered a swift and strong response that changed policies about shipping, about double-hulled construction. A number of laws came into place.

In terms of personal choices, let's all think more carefully about where we get our protein from.

The concept of 'peak oil' has penetrated the hearts and minds of people concerned about energy for the future. 'Peak fish' occurred around the end of the 1980s.

No creature on Earth ever has organized themselves in ways that we have, with the capacity to alter the nature of nature the way we have.

I personally have stopped eating seafood.