They urge 80 percent less greenhouse gases by 2050 . They want big , U.S. , China to cooperate . The United States is the world 's largest economy , with an educational and technological infrastructure that is unmatched in the world , and stable energy regulation and investment policies . China : Create path for Chinese participation in climate agreement , authors say . They say Clean Air Task Force to build low - carbon energy infrastructure in China .
They urge 80 percent less greenhouse gases by 2050 . They want big , U.S. , China to cooperate . China : Create path for Chinese participation in climate agreement , authors say . They say Clean Air Task Force to build low - carbon energy infrastructure in China .