Phil walks us through the different layers of the atmosphere. He explains what we can expect to find at each layer and the concentration of air molecules at each level.
Bill Nye explains why it gets colder as one travels up through the atmosphere. He uses miniatureĀ replicas of a city and a mountain to support his explanation. Bill also briefly touches upon the lapse rate.
Jimmy performs atmospheric pressure science experiments with Kevin Delaney, including using liquid nitrogen to explode a giant drum filled with ping pong balls.