Well, I just followed your link and I have to say, the BBC are misrepresenting me. Atheism has nothing to do with belief. Everything is a matter of probability, as quantum mechanics demonstrates. Given the absolute lack of any testable evidence, the probability that there is a god is so infinitely small that you might just as well say there is no such thing. Like unicorns, fairies or Father Xmas.
However, as with science, this is only a theory and it is available for disproof, unlike religions which propose unalterable "truths" (each of them different depending on the religion)…
As Richard has said to the idea that he may be wrong, what if he "dies and meets 'god;'":
"Well, I'm sure we could sit down and have a nice scientific discussion about where He fits into a quantum universe and then move on to the next interesting idea…" 🙂