The UN’s plan to ‘offset’ growth in aviation emissions after 2020

Airlines around the world have recently begun to monitor their CO2 emissions as part of a UN climate deal.Last month marked the first step of the UN’s “Corsia” scheme, which aims to ensure any rise in international aviation emissions above 2020 levels are offset elsewhere.The scheme was agreed by 192 countries in 2016 through the UN’s aviation agency. It is significant because of the aviation sector’s large and rapidly increasing CO2 emissions. If aviation were a country, it would be the sixth largest in the world, between Japan and Germany.Carbon Brief takes a look at how Corsia will work and the concerns over how effective it will be.