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. President Trump’s recent announcement that the United States would withdraw from the Paris climate accord was a major setback in the fight against the global climate crisis. Now more than ever, it’s up to the people to continue the energy revolution. 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.