http://m.bbc.co.uk/news/health-29504767 Nobel Prize winner John O'Keefe has warned the UK government that polices on immigration and animal research are risking Britain's scientific standing. The US-born neuroscientist won the prize for rat research into the brain's inner "GPS system". He said immigration rules were "a very, very large obstacle" to hiring the best scientists, and animal testing rules could prevent vital research.