There's a small worm called Loa Loa Filariasis. This parasite can survive in one environment exclusively- namely, underneath the skin and inside the eyes of human beings. Children and the elderly in tropical regions (usually the poorest) are the most widely affected. A painful, slow death is virtually certain. The worm can actually live in the host for 17 years before the host finally dies.

I often get letters, quite frequently, from people who say how they like the programmes a lot, but I never give credit to the almighty power that created nature.

I'm not an animal lover if that means you think things are nice if you can pat them, but I am intoxicated by animals.

All life is related. And it enables us to construct with confidence the complex tree that represents the history of life

Can a growing human population still leave space for wildlife?

Fundamentally not to waste energy. If we were all to reduce our demands for energy, it would make an enormous amount of difference.

I believe the Abominable Snowman may be real. I think there may be something in that.