I was very much the laymen, trying to find stuff out because I'm curious about the world.

Yeah. Science doesn't end. That's the one thing I learned. People think of science as spitting out right answers, and that's it. It's always under review.

Everything that we know now will be changed in 10 years time.

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

I wasn't naturally a scientist, but I was always fascinated by how the world worked and why things were the way they were.

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

I love being in America. I love America. I absolutely adore working in America. I'm at my happiest when I'm in the States.