Participants walk by a bannner depicting the flags of 196 countries as part of a project for planting trees from junior foresters and Paris schoolchildren during the COP21, United Nations Climate Change Conference, in Paris, Thursday, Dec. 3, 2015.
Participants walk by a bannner depicting the flags of 196 countries as part of a project for planting trees from junior foresters and Paris schoolchildren during the COP21, United Nations Climate Change Conference, in Paris, Thursday, Dec. 3, 2015. Francois Mori AP
Participants walk by a bannner depicting the flags of 196 countries as part of a project for planting trees from junior foresters and Paris schoolchildren during the COP21, United Nations Climate Change Conference, in Paris, Thursday, Dec. 3, 2015. Francois Mori AP

Paul Krugman: Republicans' climate change denial denial

December 05, 2015 12:00 AM