Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 10 · Episode 28 ·
Carry on Smoking
Horizon looks at the rise in the number of people who smoke and the real health risks.
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Episode 28 of season 10 of Horizon: “Carry on Smoking”. Aired 1973-11-05. Watch it online free on ZapFlix.