Key Speakers During COP21 Climate Summit Action Day

Jerry Brown, governor of California, speaks during the climate action day at the United Nations COP21 summit, at Le Bourget, in Paris, France, on Saturday, Dec. 5, 2015. France’s Energy and Environment Minister Segolene Royal yesterday said the fate of the United Nations global warming talks hinges on the willingness of richer countries to pay poorer ones more for climate-related projects. Photographer: Christophe Morin