If we were all to reduce our demands for energy, it would make an enormous amount of difference.

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 suspect that happiness is not a state but rather a transition.

The more you go on, the less you need people standing between you and the animal and the camera waving their arms about.

The whole of science, and one is tempted to think the whole of the life of any thinking man, is trying to come to terms with the relationship between yourself and the natural world. Why are you here, and how do you fit in, and what's it all about.

There are some four million different kinds of animals and plants in the world. Four million different solutions to the problems of staying alive.

Can a growing human population still leave space for wildlife?