Alan Weisman is the author of the acclaimed book The World Without Us in which he conducted a sort of thought experiment to examine the notion of how the earth would heal itself if humanity were to disappear. His new book, Countdown: Our Last Best Hope for a Future on Earth, is the result of travels to 20 different countries to understand how exactly we could add humans back into the equation in harmony with nature.

Uprising host Sonali Kolhatkar interview Alan Weisman about his new book in October 2013.

Watch a video of the interview here: