The Paris Agreement is a legally binding international treaty on climate change, adopted by 196 countries at COP21 in Paris, on December 12, 2015. Its main goal is to limit global warming to well below 2 degrees Celsius, preferably to 1.5 degrees Celsius, compared to pre-industrial levels. The agreement emphasizes the need for a global response to the threat of climate change, involving the reduction of greenhouse gas emissions and the enhancement of adaptive capacities.