As Les tightens up his tarp, he gives a very easy demonstration on how to create a few survival knots. Don't miss new episodes of SURVIVORMAN Saturdays at 10/9c on Science: http://www.sciencechannel.com/tv-shows/survivorman/ Subscribe to Science Channel: http://www.youtube.com/subscription_center?add_user=sciencechannel Check out SCI2 for infinitely awesome science videos. Every day. http://bit.ly/SCI2YT Download the TestTube app: http://testu.be/1ndmmMq