Many individuals are doing what they can. But real success can only come if there is a change in our societies and in our economics and in our politics.

I don't run a car, have never run a car. I could say that this is because I have this extremely tender environmentalist conscience, but the fact is I hate driving.

Instead of controlling the environment for the benefit of the population, perhaps we should control the population to ensure the survival of our environment

Everyone likes birds. What wild creature is more accessible to our eyes and ears, as close to us and everyone in the world, as universal as a bird?

The reverse side of the coin in having this extraordinary ability to go anywhere, is that no one anywhere is remote any more.

You've got to be fairly solemn [about the environment]. I mean the mere notion that there are three times as many people on Earth as there were when I started making television. How can the Earth accommodate them? When people, including politicians, set their faces against looking at the consequences-it's just unbelievable that anyone could ignore it.

Terrorism is an immediate problem that people are very concerned about, and I am as concerned about that as anyone else. But it isn't an either or situation.