Climate change deniers are blocking progress, UN report suggests for first time

See also: [World must triple efforts or face catastrophic climate change, says UN](https://www.theguardian.com/environment/2018/nov/27/world-triple-efforts-climate-change-un-global-warming) [Climate change: CO2 emissions rising for first time in four years ](https://www.bbc.com/news/amp/science-environment-46347453)