Bill Nye demonstrates how friction is the force that resists motion and highlights what the world would be like without friction. The science guy explores surfaces and materials that cause resistance and presents a variety of experiments that illustrate how friction works. Also examines how this force is essential to all forms transportation by demonstrating the use of traction in trains and the movement of ball bearings in automobiles.

Award-winning series explores the world of science and nature using humor, music, experiments, and interviews with scientists. DVD features fully indexed chapters correlated to National Science Standards, downloadable teacher's guide, interactive glossary and quiz, Internet links, and bonus materials.

1. Big idea -- 2. Way cool scientist : biologist -- 3. Big demo : friction and bowling -- 4. Music video.