Agence France-Presse: China's top climate change negotiator on Friday defended the vagueness of Beijing's target to peak carbon emissions "around 2030", suggesting developed nations may need to make more ambitious cuts.
China, the world's biggest emitter of carbon dioxide which scientists say causes global warming, has resisted pledging to cut emissions but this week announced a rough date by which it aims to stop them rising.
"The state of our economy in 2030 is still uncertain, so as a responsible country we also...