When People magazine called me, I did the job on Ansel. I'm older than Ansel and he has to mind me.

My mind is vacant on names, but I know him as well as anything. When I need names they drop out of my head; when I don't need them they drop back.

When I need names they drop out of my head; when I don't need them they drop back.

I became kind of a drop-out in science after I came back to America. I wanted to photograph.

Next to the striking of fire and the discovery of the wheel, the greatest triumph of what we call civilization was the domestication of the human male.

As more girls get basic schooling, larger numbers will move up the educational ladder - some to pursue science, technology, engineering, and mathematics. That's important because workplaces around the world, especially in many developing and emerging-market countries, are becoming more automated, favouring workers with technical skills.

There's an awful lot of hanging around when you're doing science fiction. Going down and waiting for them to set up, being told to go back to your dressing room while they change the track and the lighting and so on.

I really don't think of myself as a science writer.