Here`s a look at what the Paris Agreement does, how it works, and how important it is to our future. On the other side of the debate are the head of the Environmental Protection Agency, Scott Pruitt, a virulent anti-climate extremist, and chief strategist Steve Bannon, who is widely credited with shaped the president`s nationalist views and fueling his distrust of international agreements. Another country that held, Uzbekistan, finally signed the agreement last month. Carbon dioxide, nitrous oxide and methane are gases that accumulate in the atmosphere and prevent heat from radiating from the Earth`s surface into space, resulting in a greenhouse effect. According to the Intergovernmental Panel on Climate Change (IPCC), the main international scientific panel working on this issue, the concentration of these heat-trapping gases has increased significantly since pre-industrial times and has reached levels not seen in at least 800,000 years. Carbon dioxide (the main cause of climate change) has increased by 40%, nitrous oxide by 20% and methane by 150% since 1750 – mainly from the combustion of dirty fossil fuels. The IPCC says it is „extremely likely” that these emissions are mainly responsible for the rise in global temperatures since the 1950s. At the same time, deforestation and forest degradation have also contributed to their fair share of global carbon emissions. The Paris Agreement was opened for signature on 22 April 2016 (Earth Day) at a ceremony in New York.
 After several European Union states ratified the agreement in October 2016, enough countries that had ratified the agreement were producing enough greenhouse gases worldwide for the agreement to enter into force.  The agreement entered into force on November 4, 2016.  Paris Agreement, fully Paris Agreement Under the United Nations Framework Convention on Climate Change, also known as the Paris Climate Agreement or COP21, an international treaty, named after the city of Paris, France, in which it was adopted in December 2015, which aimed to reduce gas emissions that contribute to global warming. The Paris Agreement aimed to improve and replace the Kyoto Protocol, an earlier international agreement to reduce greenhouse gas emissions. .