The Paris Climate Agreement was adopted at the COP 21 in Paris, France in 2015. It is a legally binding international treaty that seeks to reduce the emission of greenhouse gases and limit global warming to well below 2, preferably to 1.5 degrees Celsius, compared to pre-industrial levels. In order to achieve this, the signatory countries aim to reach a global peak of greenhouse gas emissions as soon as possible and a climate neutral world by around 2050.
The original text of the agreement can be downloaded here.