The Paris Agreement is a landmark environmental accord that was adopted by nearly every nation in 2015 to address climate change and its negative impacts. The deal aims to substantially reduce global greenhouse gas emissions in an effort to limit the global temperature increase in this century to 2 degrees Celsius above preindustrial levels, while pursuing means to limit the increase to 1.5 degrees. The agreement includes commitments from all major emitting countries to cut their climate-altering pollution and to strengthen those commitments over time. The pact provides a pathway for developed nations to assist developing nations in their climate mitigation and adaptation efforts, and it creates a framework for the transparent monitoring, reporting, and ratcheting up of countries’ individual and collective climate goals.
How Many Countries Are in the Paris Agreement?
At present, 197 countries—every nation on earth, with the last signatory being war-torn Syria—have adopted the Paris Agreement. Of those, 179 have solidified their climate proposals with formal approval—including the United States, for now. The only major emitting countries that have yet to formally join the agreement are Russia, Turkey, and Iran.
The aim of the agreement is to decrease global warming described in its Article 2, "enhancing the implementation" of the UNFCCC through:
(a) Holding the increase in the global average temperature to well below 2 °C above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5 °C above pre-industrial levels, recognizing that this would significantly reduce the risks and impacts of climate change;
(b) Increasing the ability to adapt to the adverse impacts of climate change and foster climate resilience and low greenhouse gas emissions development, in a manner that does not threaten food production;
(c) Making finance flows consistent with a pathway towards low greenhouse gas emissions and climate-resilient development.
This strategy involved energy and climate policy including the so-called 20/20/20 targets, namely the reduction of carbon dioxide (CO2) emissions by 20%, the increase of renewable energy's market share to 20%, and a 20% increase in energy efficiency.
Countries furthermore aim to reach "global peaking of greenhouse gas emissions as soon as possible". The agreement has been described as an incentive for and driver of fossil fuel divestment.
The Paris deal is the world's first comprehensive climate agreement.