The world’s major industrial nations and emerging powers failed to agree Wednesday on significant cuts in heat-trapping gases by 2050, unraveling an effort to build a global consensus to fight climate change, according to people following the talks.
As President Obama arrived for three days of meetings with other international leaders, negotiators dropped a proposal that would have committed the world to reducing greenhouse gas emissions by 50 percent by midcentury and industrialized countries to slashing their emissions by 80 percent.
The discussion of climate change was among the top priorities as world leaders gathered here for the annual summit meeting of the Group of 8 powers. The leaders were also grappling with the sagging global economy, development in Africa, turmoil in Iran, nuclear nonproliferation and other issues.
The breakdown on climate change underscored the difficulty in bridging divisions between the most developed countries like the United States and developing nations like China and India. In the end, people close to the talks said, the emerging powers refused to agree to the limits because they wanted industrial countries to commit to midterm goals in 2020 and to follow through on promises of financial and technological help in reducing emissions.