Somehow I missed some of these details

Sept '08: UN says eat less meat to curb global warming | Environment | The Observer

'In terms of immediacy of action and the feasibility of bringing about reductions in a short period of time, it clearly is the most attractive opportunity,' said Pachauri. 'Give up meat for one day [a week] initially, and decrease it from there,' said the Indian economist, who is a vegetarian.
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Tomorrow, Pachauri will speak at an event hosted by animal welfare group Compassion in World Farming, which has calculated that if the average UK household halved meat consumption that would cut emissions more than if car use was cut in half.
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Professor Robert Watson, the chief scientific adviser for the Department for Environment Food and Rural Affairs, who will also speak at tomorrow's event in London, said government could help educate people about the benefits of eating less meat, but it should not 'regulate'. 'Eating less meat would help, there's no question about that, but there are other things,' Watson said.

However, Chris Lamb, head of marketing for pig industry group BPEX, said the meat industry had been unfairly targeted and was working hard to find out which activities had the biggest environmental impact and reduce those. Some ideas were contradictory, he said - for example, one solution to emissions from livestock was to keep them indoors, but this would damage animal welfare. 'Climate change is a very young science and our view is there are a lot of simplistic solutions being proposed,' he said.