BBC: Britain is playing its part in a worldwide bid to reduce emissions and should not weaken its proposed cuts, says a report to the UK government. The Committee on Climate Change says no change in global science or policy justifies a slackening of effort. The report was compiled after Chancellor George Osborne said the UK's competitiveness might be put at risk by leading the world in curbing emissions. The CCC research challenges this assumption. "It is not accurate to say that the UK is leading...