What we put into the atmosphere in terms of burning fuel is unprecedented.

'Green' issues at last are attracting serious attention, owing to critically important links between the environment and the economy, health, and our security.

Earth as an ecosystem stands out in the all of the universe. There's no place that we know about that can support life as we know it, not even our sister planet, Mars, where we might set up housekeeping someday, but at great effort and trouble we have to recreate the things we take for granted here.

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.

We have found ways to capture, kill and market ocean wildlife on an unprecedented scale. It's an absolute catastrophe.

Health to the ocean means health for us.

With respect to the ocean being the heart of our blue planet: We are often asked, 'How much protection is enough?' We can only answer with another question: How much of your heart is worth protecting?