Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 9 · Episode 5 ·
The Day it Rained Periwinkles
Horizon investigates reports of strange phenomena and about what the scientific theory is about these phenomena.
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Episode 5 of season 9 of Horizon: “The Day it Rained Periwinkles”. Aired 1972-02-07. Watch it online free on ZapFlix.