Climate Change: What Do Scientists Say?

Climate change is an urgent topic of discussion among politicians, journalists and what do scientists say about climate change? Does the data validate those who say humans are causing the earth to catastrophically warm? Richard Lindzen, an MIT atmospheric physicist and one of the world's leading climatologists, summarizes the science behind climate change. Donate today to PragerU! Joining PragerU is free! Sign up now to get all our videos as soon as they're r