The EU`s national contribution to the Paris Agreement is to reduce greenhouse gas emissions by at least 40% by 2030 compared to 1990, as part of its broader climate and energy framework by 2030. All the main EU legislation to achieve this goal has been adopted by the end of 2018. The IPCC notes that climate change is limited only by a “substantial and sustainable reduction in greenhouse gas emissions.” While the benefits of presenting a single global temperature threshold as a dangerous climate change can be discussed, the general scientific view is that an increase in global temperatures of more than 2 degrees Celsius would be an unacceptable risk – potentially leading to mass extinctions, more severe droughts and hurricanes, and an arid region. While it is not clear that global warming will cause “sudden and irreversible changes” in Earth`s systems, the risk of exceeding the threshold only increases if temperatures rise. The Paris Agreement was launched at the signing on April 22, 2016 (Earth Day) at a ceremony in New York.  After the agreement was ratified by several EU member states in October 2016, there were enough countries that had ratified the agreement to produce enough greenhouse gases in the world for the agreement to enter into force.  The agreement came into force on November 4, 2016.  It is rare that there is consensus among almost all nations on a single subject. But with the Paris agreement, world leaders agreed that climate change was driven by human behaviour, that it was a threat to the environment and to humanity as a whole, and that global action was needed to stop it.
In addition, a clear framework has been put in place for all countries to make commitments to reduce emissions and strengthen these measures over time. Here are some important reasons why this agreement is so important: currently, 197 countries – each nation on earth, the last signatory being war-torn Syria – have adopted the Paris Agreement. 179 of them have consolidated their climate proposals with official approval, including, for the time being, the United States. The only major emitters that have yet to formally accede to the agreement are Russia, Turkey and Iran. How each country is on track to meet its obligations under the Paris Agreement can be constantly monitored online (via the Climate Action Tracker  and the climate clock). Although the United States and Turkey are not parties to the agreement, as they have not indicated their intention to withdraw from the 1992 UNFCCC, they will continue to be required, as an “Annex 1” country under the UNFCCC, to end national communications and establish an annual inventory of greenhouse gases.  There is a lot of misinformation about the Paris agreement, including the idea that it will hurt the U.S. economy. It was a series of unsubstantiated assertions that Trump repeated in his rose garden speech in 2017, arguing that the deal would cost the U.S. economy $3 trillion in jobs by 2040 and $2.7 million by 2025, making us less competitive with China and India. But, as the auditors pointed out, these statistics come from a March 2017 unmasked study that exaggerated the future cost of reducing emissions, underestimated advances in energy efficiency and clean energy technologies, and was completely unaware of the enormous health and economic costs of climate change itself.