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US, China, and G-20 agree to work to global phase down of HFCs

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This was agreed by: Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Korea, Mexico, Russia, Saudi Arabia, South Africa, Turkey,the United Kingdom, the United States, and the European Union, as well as Ethiopia, Spain, Senegal, Brunei, Kazakhstan, and Singapore.

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Hadley Centre: Average 4 C Warming Could Happen Within a Human Lifetime, With Even Greater Warming in Many Regions

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Comparison of surface temperature projections from the high-end emissions scenario, without carbon cycle feedbacks. If carbon cycle feedbacks are strong then a 4 degree warming could occur even earlier. Temperature increases between 1961-1990 and 2090-2099, averaged over all high-end members. Source: Met Office. Click to enlarge.