Most of the intelligence out there must be artificial intelligence. We keep looking for critters like us living on a planet like ours, where in fact the majority of the intelligence out there is not biological. That would be my argument.

In archaeology, context is the basis of many discoveries that are imputed to the deliberate workings of intelligence. If I find a rock chipped in such a way as to give it a sharp edge, and the discovery is made in a cave, I am seduced into ascribing this to tool use by distant, fetid and furry ancestors.

Our brains are continuing to evolve, and perhaps a few tens of thousands of years from now, our descendants will walk around with five pound brains, allowing them insights that we can't imagine.

While it may be disappointing, I have to confess to people who ask for my insights on the meaning of it all that astronomy doesn't provide any clearly useful data on matters of sin and souls.

There were certain things that grabbed my interest, such as photosynthesis, such as us living off plants and plants living off us. You look at everything in that light - so if I'm looking at ice cubes, I might start thinking about absolute zero, or Fahrenheit and Celsius. There's so much that can make me think about science.

With scientific advances, Congress must now make changes to reflect new therapeutic options.

I was a Political Science major.

I took classes taught by an elderly woman who wrote children's stories. She was polite about the science fiction and fantasy that I kept handing in, but she finally asked in exasperation, 'Can't you write anything normal?'