Dr. Omalu explains how a football player died after a series of repeated hits to the head.

Pathologist Dr. Bennet Omalu is adamant about bringing transparency to the topic of brain damage in football players who suffer multiple concussions. His audience, however, is more concerned about how Dr. Omalu's work will affect the business of football.

The NFL wants Dr. Omalu to retract the statements that he said about football killing Mike Webster.

Grover explains and demonstrates the concept of force by pulling a rope. He also illustrates how to influence force by inviting friends to pull the rope with him.

Phil tells Mike a story of how he, Cro, and others used levers and catapults to save the lives of Bobb and Steamer when they get trapped by a earthquake to inspire Mike to have better aim when throwing paper baskets.