<p>Is it true that the oil companies knew how much harm they were doing as far back as the 1970s?</p>

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Skeptoid #877: What the Oil Companies Really Knew, Part 2

The true science behind our most popular urban legends. Historical mysteries, paranormal claims, popular science myths, aliens and UFO reports, conspiracy theories, and worthless alternative medicine schemes... Skeptoid has you covered. From the sublime to the startling, no topic is sacred. Weekly since 2006.