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

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'd missed science and what it was all about because I was too busy trying to think of other things, when I was at school. I was too busy trying to be James Dean.

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

The thing I loved, particularly, was the mystery of science and the idea that science doesn't know all the answers, but it is a process of finding out. It's not like science will give you the right answer and science knows everything. I love the mysteries of it.

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.

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