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.
The Mineral Explorers travel to Najuvan, Spain, the source of pyrite. The explorers discuss one characteristic of pyrite that is hard to believe: its perfect cube form.
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!
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.