The scientific community has warned that if greenhouse gas emissions keep increasing, the planet will reach a point of no return. Global warming will become catastrophic and irreversible.

The governments of more than 190 countries will be meeting in Paris on 7-8 December to try to reach a global agreement on climate change. Ahead of these COP21 climate talks, here are 15 world leaders talking about the imminent danger of climate change.

https://www.weforum.org/agenda/2015/11/15-quotes-on-climate-change-by-world-leaders/