Environmental destruction and excessive use of fossil fuels have increased the average global temperature. The world is experiencing unusual but frequent El Nino and La Nina events, melting glaciers of the North and South poles. Even worse, droughts, wildfires, and rainstorms are happening worldwide. Based on the 1997 Kyoto Protocol, The Paris Climate Agreement was an international treaty on climate change, adopted at the 2015 United Nations Climate Change. A long-term temperature goal is set to mitigate the global warming effects, which is keeping the rise in mean global temperature well below two degrees Celsius above pre-industrial levels, and preferably limiting the increase to 1.5 degrees Celsius.