On Saturday, delegates in Paris from 195 nations voted to adopt an agreement to limit fossil fuel pollution and set global temperature targets. The Paris Agreement pledges to limit global temperature increases to 3.6 degrees Fahrenheit, though it includes a more-ambitious goal of 2.7 degrees Fahrenheit. The deal includes a promise from larger nations to aid developing ones to help them meet the targets.
National legislators will be required to ratify the deal. The Paris Agreement stipulates that at least 55 countries representing 55 percent of the world’s population must ratify before 2020 for it to go into effect.