Jared Diamond Lectures: Collapse

Skeptics Society continues the lectures with Jared Diamond, The Pulitzer-Prize winning author of bestselling books Guns, Germs and Steel and Collapse. In these 4 part lectures he examines the downfall of the greatest civilizations. What is the reason behind the collapse of these ancient civilizations?

Related to: Jared Diamond's Collapse: How Societies Choose to Fail


Other 3 parts of the video:
http://www.youtube.com/watch?v=-lrZRewTt6A&feature=related
http://www.youtube.com/watch?v=vF12HfNIkaE&feature=related
http://www.youtube.com/watch?v=ZrslVG2Yhdc&feature=related