This week we re-cap the Climate Summit with prominent freelance journalist Vivienne Walt. Walt and host Alex Wise discuss the impact of the Paris Agreement on the world's largest polluters, explore how big banks and deep-pocketed interests are reacting to the pact, and examine efforts to accelerate the transition to clean energy in developing nations. Walt also talks about how the world views U.S. climate skepticism and what effect the November terrorist attacks and climate protests had on the summit. Produced by Alex Wise.