I'm not sure how impartial this is, but here's a link for you. Weird that it comes from a church group, but seems fairly balanced. It's specifically focussed on GM foods, but might help you a wee bit.
thousands of pro's but the one big con is taking it too far. For example there had been talks of getting blood sample and DNA from the Shroud of Turin in order to carry out the re-birth of Jesus Christ. Very interesting, but also very scary! Imagine some looney regenerating Dinosaurs.....Jurassic Park could be a reality.