Dealing with global warming doesn't mean we have all got to suddenly stop breathing. Dealing with global warming means that we have to stop waste, and if you travel for no reason whatsoever, that is a waste.

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

London has fine museums, the British Library is one of the greatest library institutions in the world... It's got everything you want, really.

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

All our environmental problems become easier to solve with fewer people and harder - and ultimately impossible to solve - with ever more people.

Everyone likes birds. What wild creature is more accessible to our eyes and ears, as close to us and everyone in the world, as universal as a bird?

I've never actually met one in the wild, but I have seen a king cobra. They go towards people, they rear up six feet tall and they're very aggressive and they are very fast. And one bite means certain death. So if I encountered a king cobra in the wild I would be very alarmed.