I believe the answer to the first question is no. To be an expression of the universe, by all definition we would have to come from within the universe.

Reaper666 summed up the atomic theory part alright as far as what I know about it. Then you throw some cooperative cell cluster theory, which is very easy to believe and proove on several levels, on top of that. And add my own statement that order is only what we observe then define it as. That's probably actually part of another theory, but throw it in there anyway. Then it's easy to say we could have come from something other than an intelligent creator.