How is friction used to help snowboarders ride? Listen as Dr. Bill Robertson (aka Dr. Skateboard) explains to Chuck Nice, Gary O'Reilly and Othello Clark why snowboarding is one of the only sports that embraces friction. Plus, hear Dr. Skateboard elaborate on the best kinds of snowboards. If you like this StarTalk SoundBite, be sure to tune in to the full Playing With Science episode "Snowboarding: Shreddin' the Gnar" at https://soundcloud.com/startalk_playing-with-science/snowboarding-shreddin-the-gnar