Former U.S. Vice-President and long-time climate campaigner Al Gore gave an impassioned powerpoint performance. The rapt audience for his Climate Reality Project presentation was composed of the negotiators, activists, and reporters at the 20th Conference of the Parties (COP-20) of the United Nations Framework Convention on Climate Change. The U.N.'s side event listing promoted Gore's talk as explaining that "In the struggle to solve the climate crisis, a powerful, yet largely unnoticed shift is taking place." Reason Science Correspondent Ronald Bailey admires the former VP's enthusiasm for technological innovation, but does wish he'd stop making exaggerated claims about what climate science says about future warming.