The Nature of Things: Season 20
This season started on October 24, 1979. The table lists episodes with recorded air dates up to September 28, 2026.
| Ep | Title and air date | My place |
|---|---|---|
| 1 | Flying Circus of Physics / Immune System / Monarch Butterfly / Contact Lenses | |
| 2 | Hypnosis / India's Sacred Cows / Ultra Sound Scanne | |
| 3 | Madagascar: Island of the Moon | |
| 4 | Puppets / One, Two, Three, Zero / New Wave Babies | |
| 5 | Contact | |
| 6 | Deep Diving / Memory: Come to Think of It | |
| 7 | Arctic Oil | |
| 8 | Clinical Trials / Folk Medicine / Magnetic Bacteria | |
| 9 | Left Brain, Right Brain | |
| 10 | Insects / Oyster Culture / Science Fairs | |
| 11 | Memories From Eden | |
| 12 | Paul Jacobs and the Nuclear Gang | |
| 13 | Crocodile City / Spanish Galleons / World's Largest Windmill / Cement | |
| 14 | High altitude Physiology / The Vision of Galileo / Dust Storms | |
| 15 | Seal Psychology / Chiricahuas / Violins |
