The Paris Agreement is a legally binding international treaty on climate change. It was adopted by 196 Parties at COP 21 in Paris on December 12, 2015 and entered into force on November 4, 2016. Its goal is to limit global warming to well below 2, preferably 1.5 degrees Celsius, above pre-industrial levels. To make this long-term temperature goal a reality, countries aim to peak global greenhouse gas emissions as soon as possible to achieve a climate-neutral world by mid-century. The Paris Agreement is a milestone in the multilateral process to combat climate change because, for the first time, a binding agreement brings all nations together in common cause to undertake ambitious efforts to combat climate change and adapt to its effects.