Oil Companies Knew Coral Reefs Would Dissolve. In 1978.

In 1978, an Exxon scientist asked a question in capital letters: were the oceans dissolving coral reefs? By 1982, Exxon's own scientists had the answer, in writing. So did Shell by 1986. This episode traces a newly published Oxford University study that dug through more than fourteen thousand pages of fossil fuel industry documents and found that the world's biggest oil and gas companies understood, decades before the public did, exactly how their product would wreck coral reefs.

We walk through what the industry knew and when, how a funded think tank report in 2012 was built to look like an official government climate assessment while contradicting the industry's own internal science, and where coral reefs stand today after the largest global bleaching event ever recorded. Along the way, we cover the coral chemistry that makes reefs vulnerable to rising CO2, the internal Exxon and Shell documents at the center of the Oxford study, and how this paper trail is now showing up as evidence in real courtrooms, including a landmark January 2026 ruling in The Hague.

This isn't a story to leave you paralyzed. It closes with four concrete actions you can take this week, from sharing what you now know to pushing the emissions lever that actually moves the needle. If you care about coral reefs, or you just want the receipts on one of the biggest corporate cover-ups tied to the ocean, this episode is for you.

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