About 150 countries have agreed to a deal reducing greenhouse gases far more powerful than carbon dioxide in an effort to fight climate change. The agreement divides countries into three groups with different deadlines to reduce the use of factory-made hydrofluorocarbon gases, according to Rwandan minister Vinncent Biruta. The developed nations, including most of Europe and the US, will reduce their use of the gas by 10% before 2019, reaching 85% by 2036. More than 100 developing countries, including China, the world's worst polluter, will freeze their use of the gas by 2024.
Compromises had to be made, but 85% of developing countries have committed to the early schedule starting 2024, which is a very significant achievement.Clare Perry, UK climate campaign leader with the Environmental Investigation Agency
A small group of countries, including India, Iran, Iraq, Pakistan and some Gulf states negotiated a later start in 2029. That date is two years earlier than India, the world's third-worst polluter, had initially suggested. These countries will then reduce their use gradually. Environmental groups say they hope the deal can cut global warming by a half-degree celsius by the end of this century. Durwood Zaelke, president of Institute for Governance and Sustainable Development, said the agreement gets about 90% of the way there, with a statement from his group describing it as the "largest temperature reduction ever achieved by a single agreement".