3-2-1 Contact - Unknown - Season 4

When available, episode names will be translated into your preferred language. Otherwise they will be shown using the series' origin language.

	Name	First Aired	Runtime
S04E01	Tropics: Rubber	September 23, 1985 PBS	30
S04E02	Tropics: Metals	September 24, 1985 PBS	30
S04E03	Tropics: Rice	September 25, 1985 PBS	30
S04E04	Tropics: Working Animals – Monkeys and Elephants	September 26, 1985 PBS	30
S04E05	Tropics: Endangered Animals	September 27, 1985 PBS	30
S04E06	Light: From the Sun; To Your Eyes	September 30, 1985 PBS	30
S04E07	Light: Color	October 1, 1985 PBS	30
S04E08	Light: Eyes	October 2, 1985 PBS	30
S04E09	Light: How Animals See	October 3, 1985 PBS	30
S04E10	Light: Bending and Bouncing	October 4, 1985 PBS	30
S04E11	Farms: Sheep and Pigs – Selective Breeding	October 7, 1985 PBS	30
S04E12	Farms: Plants and Pigs – Plant Production	October 8, 1985 PBS	30
S04E13	Farms: Hybrids	October 9, 1985 PBS	30
S04E14	Farms: Cows and Pigs – Animal Products	October 10, 1985 PBS	30
S04E15	Farms: Chickens and Pigs – Animal Production	October 11, 1985 PBS	30
S04E16	Stuff: Metals	October 14, 1985 PBS	30
S04E17	Stuff: Clay	October 15, 1985 PBS	30
S04E18	Stuff: Shaping It	October 16, 1985 PBS	30
S04E19	Stuff: Feathers and Rubber	October 17, 1985 PBS	30
S04E20	Stuff: Using It season finale	October 18, 1985 PBS	30

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