I heard about this site on Google Blogoscoped. You may recall that Google Answers is a service that Google offers. You ask a question and pay, and they essentially have someone do some research for you. Apparently, once the research has been done, the answers are available for all to see. Best of Google Answers is a blog where the blogger highlights some of the best questions/answers. The posts can be sporadic, but they are great links. In particular, the one highlighted in Google Blogoscoped was Wonders of being a baby in the womb – and before!. The answer is quite indepth and links to all sorts of great resources.