As a child, we couldn't afford holidays overseas, so instead I travelled through books. I was inspired by Dr Dolittle and Tarzan.

Animals were my passion from even before I could speak apparently. When I was about 10, 11 I fell in love with Tarzan.

To reconnect with nature is key if we want to save the planet.

We can't leave people in abject poverty, so we need to raise the standard of living for 80% of the world's people, while bringing it down considerably for the 20% who are destroying our natural resources.

Of course we're all programmed genetically to some extent. But the "selfish gene" thesis doesn't explain everything.

From my perspective, I absolutely believe in a greater spiritual power, far greater than I am, from which I have derived strength in moments of sadness or fear. That's what I believe, and it was very, very strong in the forest.

Primates are very territorial. It is in their nature to protect their food resources as well as their females and young.