. The study comes as leaders from nearly 200 nations are crafting a new global climate change accord that is expected to be signed in Paris in December. As part of the deal, all countries have been asked to submit targets for tackling greenhouse gas emissions. China’s contribution is a pledge to peak its climate pollution by 2030 and to curb carbon intensity—emissions per unit of gross domestic product—60 to 65 percent below 2005 levels by 2030