Greg Bear

For years, even before 9/11, I've been trying to warn that the threat from amateur biolabs will ultimately turn out to be far more troublesome than leakage from military labs - perhaps even more costly and deadly than nuclear terrorism.

Ray Bradbury is, for many reasons, the most influential writer in my life. Throughout our long friendship, Ray supplied not only his terrific stories but a grand model of what a writer could be, should be, and yet rarely is: brilliant and charming and accessible, willing to tolerate and to teach, happy to inspire but also to be inspired.

I remember from my school days Archimedes jumping into his bath and displacing water and coming up with his famous principle, and of course Isaac Newton being hit on the head with an apple. In other words, this realm of human knowledge - which is mathematical, essentially - can have a playful visual element to it.

Working with franchises can be challenging, but at the same time I really did enjoy working on 'Star Wars,' for example, and I have done a lot of 'Dungeons & Dragons' games, but I still enjoy it very much.