Beakman explains how to create a bouncing egg by putting it in a jar of vinegar for a few days. He says the shell is hard because it's made of minerals and the aceitic acid in vinegar breaks down those minerals leaving behind the rubbery texture.

Lowly Worm and Huckle Cat wonder about what kinds of gems and metals could be buried under Busytown. They think about the mining process that brings us things like jewels, iron, and more!

On their trip to a cave, Papa explains to the cubs what the makeup of the cave walls is.

The dwarfs dig the mines for valuable gems to make their riches. They sing a song that describes their work.

Bill Nye explains why it gets colder as one travels up through the atmosphere. He uses miniature replicas of a city and a mountain to support his explanation. Bill also briefly touches upon the lapse rate.