CHINA announced its first targets for limiting carbon emissions last night, joining the US in revealing the stance it will take at next month's high-stakes climate summit in Copenhagen. China will cut the intensity of carbon dioxide emissions per unit of gross domestic product in 2020 by 40 to 45 per cent from 2005 levels, said a statement from the State Council, or cabinet. "This is a voluntary action taken by the Chinese government based on its own national conditions and is a major contribution to the global effort in tackling climate change," the statement said. The announcement marks the...