Sezon 20
Bölümler
1 Flying Circus of Physics / Immune System / Monarch Butterfly / Contact Lenses 24 Eki 1979 2 Hypnosis / India's Sacred Cows / Ultra Sound Scanne 31 Eki 1979 3 Madagascar: Island of the Moon 7 Kas 1979 4 Puppets / One, Two, Three, Zero / New Wave Babies 14 Kas 1979 5 Contact 21 Kas 1979 6 Deep Diving / Memory: Come to Think of It 28 Kas 1979 7 Arctic Oil 5 Ara 1979 8 Clinical Trials / Folk Medicine / Magnetic Bacteria 12 Ara 1979 9 Left Brain, Right Brain 19 Ara 1979 10 Insects / Oyster Culture / Science Fairs 26 Ara 1979 11 Memories From Eden 2 Oca 1980 12 Paul Jacobs and the Nuclear Gang 6 Şub 1980 13 Crocodile City / Spanish Galleons / World's Largest Windmill / Cement 20 Şub 1980 14 High altitude Physiology / The Vision of Galileo / Dust Storms 27 Şub 1980 15 Seal Psychology / Chiricahuas / Violins 5 Mar 1980