I first became aware of Charles Darwin and evolution while still a schoolboy growing up in Chicago. My father and I had a passion for bird-watching, and when the snow or the rain kept me indoors, I read his bird books and learned about evolution.

One-third of all female infertility is the result of blocked fallopian tubes. If fertilization could be done in the lab and then the fertilized egg implanted in the womb, it would get around that problem. Millions of women who cannot have children would suddenly be able to.

I never could read science fiction. I was just uninterested in it. And you know, I don't like to read novels where the hero just goes beyond what I think could exist. And it doesn't interest me because I'm not learning anything about something I'll actually have to deal with.

Science moves with the spirit of an adventure characterized both by youthful arrogance and by the belief that the truth, once found, would be simple as well as pretty.