An overlooked source of carbon emissions

Nations that pledged to carry out the Paris climate agreement have moved forward to find practical ways to reduce greenhouse gas emissions, including efforts to ban hydrofluorocarbons and set stricter fuel-efficiency standards. ...

US launches new coalition to fight climate change

Faulting the world for not doing enough to fight climate change, the United States on Thursday announced the formation of a coalition to cut short-lived pollutants that speed up warming and harm health.

North America backs plan to cut greenhouse gases

(AP) -- Small island nations gained North America's powerful backing Tuesday for a plan to convert the U.N. ozone treaty into a tool for phasing out some of the globe's most powerful climate-warming gases.