Guardian: The government is expected to confirm tomorrow that emissions of greenhouse gases fell by a modest amount in 2008 compared to the previous year. Ministers are likely to try to portray the figures as evidence that the UK is on the right track to meeting its targets to cut emissions by over a third by 2020 compared to 1990 levels. But energy experts said that the small decline was a result of the recession and record energy prices, rather than government policy. In 2008 petrol prices …