Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 7 · Episode 25 ·
Water, Water
Horizon looks at the work of scientists as they unravel the problems of providing us with water.
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Episode 25 of season 7 of Horizon: “Water, Water”. Aired 1970-09-21. Watch it online free on ZapFlix.