Home Documentaries Science Documentaries Last Extinction DocumentariesScience Documentaries Last Extinction 1067 FacebookTwitterPinterestWhatsApp In this episode of PBS’s NOVA; A new theory about what killed off America’s mammoths. No ratings yet. Please rate this: How do you rate this? RELATED ARTICLESMORE FROM AUTHOR The Great Math Mystery Becoming Human Origin of Life – How Life Started on Earth Invisible Worlds The Age of Hubble What Plants Talk About LEAVE A REPLY Cancel reply Please enter your comment! Please enter your name here You have entered an incorrect email address! Please enter your email address here Save my name, email, and website in this browser for the next time I comment. Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.