Thom Hartmann on Climate Change: How Bad Will It Get?

Thom Hartmann is the four-time Project Censored Award-winning, New York Times best-selling author of 25 books currently in print in over a dozen languages on five continents in the fields of psychiatry, ecology, politics, and economics, and the #1 progressive talk show host in the United States.

In the field of environmentalism, Thom has co-written and co-starred in 4 documentaries with Leonardo DiCaprio, and is also featured in his documentary theatrical release The 11th Hour. His newly-updated and re-released book, The Last Hours of Ancient Sunlight, about the end of the age of oil, is an international bestseller and used as a textbook in many schools.