In this video, we discuss the 6 major classes of synovial (diarthrotic) joints, along with relevant examples, movements allowed, and other critical features.

In this video, we discuss how the upper and lower ribs move in response to thoracic flexion and extension.

The science that makes ice slippery also makes the Olympic Winter Games possible. But exactly what makes ice slippery? Ken Golden, a mathematician at the University of Utah, explains how the unique surface of ice makes the slide and...

The ice skates worn by this year's hockey players, figure skaters and speed skaters are vastly different from what were once used. Melissa Hines, the Director of the Cornell University Center for Materials Research, and Sam Colbeck,...

Did you know that if you throw a rock in space, whatever velocity it has at the moment that it leaves your hand, it will continue moving with that velocity indefinitely? That's Newton's first law. It applies to objects on earth as well,...