Sydney Morning Herald: THE Prime Minister, Kevin Rudd, will use Australia’s first appearance at a Group of Eight summit to urge all nations, including the big developing economies of China and India, to take urgent action on climate change. The leaders of the Group of Eight rich economies yesterday issued a communique from their Tokyo summit describing a vision to cut carbon emissions by at least 50 per cent by 2050. Mr Rudd will have an opportunity today to address an expanded group, including the …