We want to be special. We want our place in the cosmos to be central. We want evolution-even godless evolution-to have been directed toward us so that we stand at the pinnacle of nature's ladder of progress. Rewind the tape of life and we want to believe that we (Homo Sapiens) would appear again and again. Would we? Probably not.

It is sad that while science moves ahead in exciting new areas of research, fine-tuning our knowledge of how life originated and evolved, creationists remain mired in medieval debates about angels on the head of a pin and animals in the belly of an Ark.

Science is not the affirmation of a set of beliefs but a process of inquiry aimed at building a testable body of knowledge constantly open to rejection or confirmation. In science, knowledge is fluid and certainty fleeting. That is at the heart of its limitations. It is also its greatest strength.

The question itself [of UFOs] I think is legitimate. It's interesting, it's fascinating. It's mythic in scale and one of the grand questions. It's like the God question or, you know, the meaning-of-life question. It's one of those, on that scale. So you'd have to be made of wood not to be interested and, you know, have they come here? Are they up there?

When alien abductees recount to me their stories, I do not deny that they had a real experience.

The whole point of faith, in fact, is to believe regardless of the evidence, which is the very antithesis of science.

No single discovery from any of these fields denotes proof of evolution, but together they reveal that life evolved in a certain sequence by a particular process.