Don't miss this crucial conversation with former Vice President and climate change activist Al Gore on how far the battle to halt climate change has come -- and why he thinks the momentum is unstoppable. Gore has become a uniquely post-political figure, pursuing ideas larger than any party or office. In his upcoming film "An Inconvenient Sequel: Truth to Power" he continues his tireless fight, traveling around the world training an army of climate champions and influencing international climate policy.

• An Evening With Al Gore Details & Tickets