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

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

Those people who are scared of science or are a bit dismissive of science tend to not really understand what science really is, which is the most beautiful, most elegant and most creative way of looking at the world.

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 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.

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.

There is so much wonder and joy in science, about understanding how the world works and why the world is the way it is. It's not just for academics. It is a thing that's available to everyone.