Leaders of 11 Chinese cities and provinces on Tuesday will announce plans to cut carbon emissions earlier than China's national target of 2030, a move meant to build momentum for a global accord in December, according to the White House.
Those announcements, as well emission-reduction commitments from more than a dozen U.S. states and cities, will form part of a joint declaration that municipal and regional leaders from the world's two biggest greenhouse gas-emitting countries will sign at a U.S.-China meeting in Los Angeles on Tuesday and Wednesday.