Reuters: A new global treaty on climate change hinges on China and India agreeing to limit their CO2 emissions but it is unclear whether they will do so, Denmark’s climate and energy minister said. Connie Hedegaard, who is a key mediator in the talks to find a successor to the Kyoto Treaty, said western nations must agree to pay to help poorer countries cut emissions. However, this will not be enough to get a deal at a United Nations climate conference in Copenhagen in December, or to …