Rich nations should cut their greenhouse gas emissions by at least 40 percent by 2020 from 1990 levels as part of a new global climate change pact, China said on Thursday, spelling out its stance ahead of negotiations.
Photo: Shannon Stapleton

A top Chinese state think tank has proposed a global greenhouse gas trading plan to reflect the different historic emissions of rich and poor nations, indicating deepening discussion in Beijing about climate change policy.

China must swiftly decouple its rapid economic growth from rising carbon dioxide emissions for global greenhouse gas levels to stay manageable, the authors of a new study said, urging sweeping support to help that transition.