G8 Nations Fail to Agree on Plan to Fight Climate Change

L’AQUILA, Italy — The world’s major industrial nations and newly emerging powers failed to agree Wednesday on specific cuts in heat-trapping gases by 2050, undercutting 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, negotiators for the world’s 17 leading polluters dropped a proposal to cut global greenhouse gas emissions by 50 percent by midcentury, and emissions from the most advanced economies by 80 percent. But both the G-8 and the developing countries agreed to set a goal of stopping world temperatures from rising by more than 2 degrees Celsius from preindustrial levels.

The discussion of climate change was among the top priorities of world leaders as they gathered here for the annual summit meeting of the Group of 8 powers. Mr. Obama invited counterparts from China, India, Brazil, South Africa, Mexico and others to join the G-8 here on Thursday for a parallel “Major Economies Forum” representing the producers of 80 percent of the world’s greenhouse gases. But since President Hu Jintao of China abruptly left Italy to deal with unrest at home, the chances of making further progress seemed to evaporate.

The G-8 leaders were also grappling with the sagging global economy, development in Africa, turmoil in Iran, nuclear nonproliferation and other challenging issues. On Friday, Mr. Obama planned to unveil a $15 billion food security initiative by the G-8 to provide emergency and development aid to poor nations.

The failure to establish specific targets on climate change underscored the difficulty in bridging longstanding 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 specific emissions limits because they wanted industrial countries to commit to midterm goals in 2020, and to follow through on promises of financial and technological help.

“They’re saying, ‘We just don’t trust you guys,’ ” said Alden Meyer of the Union of Concerned Scientists, an advocacy group based in the United States. “It’s the same gridlock we had last year when Bush was president.”

American officials said they still had made an important breakthrough because the G-8 countries within the negotiations agreed to adopt the 2050 reduction goals, even though the developing countries would not.

And they said a final agreement with developing countries, including China and India, to be sealed on Thursday would include important conceptual commitments by the emerging powers to begin reducing emissions and to set a target date. Now negotiators will have to try to quantifying those commitments in coming months.