Advertisement10 Things To Know About The U.N. Climate Talks In Paris51:22Download AudioResumeNovember 30, 2015Ari ShapiroNell GreenfieldboycefacebookEmailA view of the opening of COP21 on climate change Monday in Paris. More than 150 world leaders are meeting for the 21st Session of the Conference of Parties to the United Nations Framework Convention on Climate Change. (Getty Images)