Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 9 · Episode 24 ·
When Polar Bears Swam in the Thames
This episode of Horizon looks the how the ice age physically shaped the British landscape.
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Episode 24 of season 9 of Horizon: “When Polar Bears Swam in the Thames”. Aired 1972-10-19. Watch it online free on ZapFlix.