Being in touch with the natural world is crucial.

I would love to see a giant squid. Very few people have seen them. And only about half a dozen people have seen one alive.

Birds are the most popular group in the animal kingdom. We feed them and tame them and think we know them. And yet they inhabit a world which is really rather mysterious.

I suffer much less than many of my colleagues. I am perfectly able to go to Australia and film within three hours of arrival.

We can now destroy or we can cherish-the choice is ours.

I'm a humanist. I'm neither one side nor the other.

In the West, that's what's happening. The birth rate has been dropping steadily and still is. But there is still a vast amount of the world where that's not the case. And that is where the big population growth is taking place.