Speedskaters Eric, Lisa, Ned and Sarah investigate what types of turns optimize their speed and maneuverability in short track racing. To determine which tire pressure will allow them to maintain speed and control through turns, mountainboarders, Sean, Ben and Neil create a mini-course and ride it at different tire pressures. Ryan Newman, NASCAR driver and engineer, creates faster, safer race cars using mathematics, computer simulations and other technologies.

Originally released by Big Media Holdings LLC, 2013. Streaming video file encoded with permission for digital streaming by Infobase on February 10, 2017.

Which Type of Turn is the Fastest? (5:38); --Ice Skating Turn Results (3:17); -- Calendar of Life Forms (2:51); -- Tire Experiment (5:42); -- Tire Results (2:08); -- Credits: Race Cars and Tire Pressure: Dragon Fly TV (0:40); .