Also explain chemical evolution too. How where when did it start?
Chuck, you have been given an answer, so what exactly are you looking for here?
Are you asking to be pointed to the literally thousands of research papers on this topic?
Are you asking bluegenes to summarise this immense body of work in a few succint sentences that you can understand?
Are you claiming that such research doesn't exist?
Are you claiming that such research is wrong in its entirety?
Are you claiming that such research will never succeed?