When I'm travelling, I always take my little notebook and scribble things down as I watch them; I'm very much geared to everything that's happening. Whereas, the diary I keep is just about a record of a day I've spent. When I'm filming, I'm looking quite intensely at everything I see and trying to get my own eye on what we're going through.

People look for patterns in everything. It's what keeps us sane, I suppose. I struggle to see any patterns in my life. I think I can understand depression a bit because of my sister. My own feelings of ... I'm aware that, if you feel down, it can be strangely unrelated to circumstances around you. That's just the way life is.

Once the travel bug bites there is no known antidote, and I know that I shall be happily infected until the end of my life

John Hall, my geography teacher at school inspired me to a lifelong interest in geography and a curiosity about our world which has stayed with me through my life. Geography is a living, breathing subject, constantly adapting itself to change. It is dynamic and relevant. For me geography is a great adventure with a purpose.

There are many ways of seeing the world. You can hang upside down from a meteor, volunteer to be the fourth stage of a three-stage rocket, or simply get in a balloon and keep going. But if it's sheer, unadulterated discomfort you're looking for, just stay on land.

I cut down trees, I skip and jump, I like to press wild flowers. I put on women's clothing and hang around in bars.

I have been unusually blessed in that I've been allowed to pursue two strands of a career that both delight me and seem to please the public.