U.N. Secretary General Ban Ki-moon and French President Francois Hollande are greeting heads of state and government from around the world for high-stakes talks aimed at fighting global warming. 


One by one, some 150 leaders are arriving at the conference center near the Le Bourget airfield just north of Paris. Ban, Hollande, the head of the U.N. climate change agency Christina Figueres, and French Environment Minister Segolene Royal are standing in front of the conference center to greet them. 


Afterwards, each leader will give a speech laying out their countries' efforts to reduce man-made emissions and cope with climate change.
The event opening Monday lasts through Dec. 11 and is under extra-security after Nov. 13 extremist attacks in Paris

Source: NNA