What is the Paris Agreement’s Article 6 and why is it so controversial?

Part of the 2015 Paris Agreement, Article 6 was created to help nations work together to reduce climate-causing pollution.

After nearly a decade of negotiations, leaders during the United Nations climate conference’s first day decided on some of the finer points of much-debated sticking point aimed at cutting planet-warming emissions from coal, oil and gas.

Known as Article 6, it was set up as part of the 2015 Paris Agreement to help nations work together to reduce climate-causing pollution.