A view of a cooling tower and the smoke stacks of a power plant in Beijing November 15, 2007. Two key measures of pollution in China have fallen slightly in what the country's environmental regulator claimed was a victory for its clean-up procedures, state media reported on Thursday. Emissions of sulphur dioxide, which belches from smokestacks and causes acid rain, fell by 1.81 percent in the first nine months of 2007 compared with the same period last year, the China Daily reported. REUTERS/Claro Cortes IV (CHINA)