The slogan "DECARBONIZE" is projected on the Eiffel Tower as part of the COP21, United Nations Climate Change Conference in Paris, France, Dec. 11, 2015.
The slogan "DECARBONIZE" is projected on the Eiffel Tower as part of the COP21, United Nations Climate Change Conference in Paris, France, Dec. 11, 2015. Francois Mori AP
The slogan "DECARBONIZE" is projected on the Eiffel Tower as part of the COP21, United Nations Climate Change Conference in Paris, France, Dec. 11, 2015. Francois Mori AP

Paul Krugman: Hope from Paris on climate change

December 15, 2015 12:00 AM