An understanding of the natural world and what's in it is a source of not only a great curiosity but great fulfillment...

Until humanity manages to sort itself out and get a co-ordinated view about the planet, it's going to get worse and worse.

You know, it is a terrible thing to appear on television, because people think that you actually know what you're talking about.

Before the BBC, I joined the Navy in order to travel.

Can a growing human population still leave space for wildlife?

You'll find people where their conditions aren't changing in any way, its rather rare for them to be happy.

It's like saying that two and two equals four, but if you wish to believe it, it could also be five ... Evolution is not a theory; it is a fact, every bit as much as the historical fact that William the Conqueror landed in 1066.