I've found the thing in life that I adore, which is working in science television. It's just a big adventure, really.

At the heart of science is experimentation. Science doesn't care what you think. What's important is experimenting and actually working stuff out.

When I was acting, as a hobby, I would devour popular science books and keep up-to-date about what was going on in the science community. And then, suddenly my hobby became my job. I didn't one day say, "I'm not acting. I'm now going to be a science person."

I've never felt scared of flight, ever. It's really weird. I don't know. They stick a gin and tonic in your hands and I just think, "Life is good!"

I was awful at science at school, as a subject, because I didn't have the discipline. But, I was awful at music, as well, and I loved music.

In my lifetime, the population of the world has doubled.

If you go through life and actually get to find out the thing you want to do, you're very lucky.