The UK is, I believe, the first country to authotize the creation of hybrid (human-animal) embryos for research purposes. The HFEA (Human Fertilisation & Embryology Authority) still wants the scientists to make individually applications for their research, but there it is - somehow we are pushing the limits. There is a large ethical debate going on in the UK about this, and a good article at bbc.com outlining the issues here. There will be benefits of this research - of that there is no doubt. But I wonder if this is not a step too far. Once we get used to the idea, what will be the next step? It will be interesting to see if other countries follow, now that the barrier is down.