People think of science like somehow that's the answer, and that it's all about right answers, but science is a lens that we look at the world through.

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

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.

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

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

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

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.