I can't think of anything specific growing up that pointed me toward NASA at all. I was interested in the Moon landings just about the same as everyone else of my generation. But I never really thought about being an astronaut or working in space myself.

Other than motherhood, the eight years that I spent at the University of Wisconsin, Madison, I have incredibly fond memories of. It's a beautiful place, with four seasons up in Wisconsin. And really wonderful people.

Some things are only capable of being done in space. Examples of that are looking at our Earth from that far away, and understanding the entire processes of storms and weather patterns, and oceans, and coastlines.

We're looking at Earth science, observing our planet. Also space science, looking at the ozone in the atmosphere around our Earth. Also looking at life science. And on a human level, using ourselves as test subjects.

My personal conviction is that science is concerned wholly with truth, not with ethics.

It is as though nature is a wonderful symphony that science sits in awe of. It looks closely at each player, how the tubas are tuned and how the strings are strung. Creationism lets out a loud 'shush' at such excitement. Just enjoy the show and stop asking questions.

What I'm working on now - I'm back to fantasy, although considering that it's me, I'm turning it into a kind of science fantasy. It's a vampire story - but my vampires are biological vampires. They didn't become vampires because someone bit them; they were born that way.

Seldom in the history of medicine has the recognition of the most effective cure followed as swiftly on the heels of the discovery of a disease as the establishment of the complete effectiveness of iodothyrin and thyroidin followed the recognition of cachexia thyreopriva.