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What ratification threshold allowed the Paris Agreement to enter into force in 2016?
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Paris Agreement
(From left) José Gurría, Justin Trudeau, Enrique Peña Nieto, Jim Yong Kim, François Hollande, Angela Merkel, Michelle Bachelet, and Hailemariam Desalegn during the 2015 UN climate change conference that resulted in the Paris Agreement.
The Paris Agreement entered into force on November 4, 2016, after meeting a specific dual-ratification threshold. To become effective, the treaty required ratification by at least 55 parties that collectively accounted for at least 55 percent of total global greenhouse gas emissions.1