Hank explains the dynamics of the Wright Brothers' early airplane prototypes and how they looked at birds to figure out the initial designs of their biplanes.

Ada and her friends investigate how a bird makes its nest with a microscope.

Amy and her father prepare to guide the geese south for the winter. They plan out the journey and give the geese flying workouts so they will be able to handle the long flight times.

Von Bolt learns about the pheromones and tries to use them to get the attention of a new lady robot. Watch Thomas Edison's Secret Lab on Netflix, the Kid Genius channel on Xfinity, public television and DVD. Visit EDISONSECRETLAB.COM for games, videos, downloads and more!

What starts off as an innocent game of tag between Kiara and Kovu ends in a confrontation between Simba and Zira about territory and expulsion.