If the UK's big meat eaters cut some of it out of their diet, it would be like taking 8 million cars off the road. That's just one of the findings of new research that scientists say provides the most reliable calculation yet of how what we eat affects our planet. The University of Oxford study is the first to pinpoint the difference between high- and low-meat diets in greenhouse gas emissions, researchers say. The meat industry said the analysis exaggerated the impact of meat consumption. Professor Peter Scarborough, from the University of Oxford, who led the new research, told BBC News: "Our results show that if everyone in the UK who is a big meat eater reduced the amount of meat they ate, it would make a really big difference." (Pallab Ghosh, BBC)