Ministers from Canada, Russia and US join call to tackle black carbon and methane emissions to reduce short term warming
Chemical giant behind HFC replacement chemicals says progress through the Montreal Protocol could represent huge climate change action
Environmental Investigation Agency says new EU standards can raise ambition in developing world and cut effects of rapid rise in global air conditioning and refrigerant use
New study questions assumption that tackling black carbon, i.e. soot, could bring relatively quick gains to efforts to combat climate change.