Narrowing It Down

I have decided to focus my research solely on the genetic engineering of humans because the subject of genetic engineering is a little too broad. I picked humans because to many people, it seems a lot less tangible to genetically engineering a human than an animal, plant, or food (which have all been done before). The whole concept is surrounded by uncertainty and almost a little bit of fear. I think it would be interesting to investigate the current status of human engineering, the pros and cons, and where it has the potential to go from there.