Seasons & episodes

S4 · E1A Victim of Gravity 1978-09-16 · 3 min＋

The Tokens harmonize Newton's theory that gravity keeps things down.

S4 · E2Interplanet Janet 1978-11-18 · 3 min＋

A solar system tour of the planets.

S4 · E3The Body Machine 1979-01-06 · 3 min＋

A trip that makes understanding the digestive system easy to swallow.

S4 · E4Do the Circulation 1979-03-10 · 3 min＋

An energetic, enthusiastic look at the cardiovascular system.

S4 · E5The Energy Blues 1979-03-27 · 3 min＋

Thirty years later, the world is still singing the "Energy Blues."

S4 · E6Them Not-So-Dry Bones 1979-05-05 · 3 min＋

A look at what skeletons are really like and do.

S4 · E7Electricity, Electricity 1979-05-19 · 3 min＋

A dazzling look at how electricity works.

S4 · E8Telegraph Line 1979-06-30 · 3 min＋

Your nervous system sends that urgent message to your brain.

S4 · E9The Greatest Show on Earth (aka The Weather Show) 1979-07-07 · 3 min＋

Learn about weather and how it is created.