How can a corpse be incorruptible?

Science hasn't yet explained how incorruptibles -- corpses that don't rot -- are preserved. Do they have anything to do with sainthood? And how can nature turn a corpse into a mummy?

It's a fact: Carbon-based life forms here on Earth are eventually going to cease to exist. And that includes you and me. Regardless of where you reckon your soul will travel (or even if you believe you have a… » Full Story on HowStuffWorks