Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 4 · Episode 12 ·
Cancer - The Smoker's Gamble
Why is there doubt in so many people's minds about the relationship between lung cancer and smoking? Tonight's programme examines the latest scientific evidence in detail.
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Episode 12 of season 4 of Horizon: “Cancer - The Smoker's Gamble”. Aired 1967-06-20. Watch it online free on ZapFlix.