From PBS Terra.

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There’s an 18% chance that global warming exceeds four degrees by 2100 and that’s not a small risk when the stakes are civilization-ending.

In this episode of Weathered, host Maiya May talks with civilization collapse researcher Luke Kemp and strategic climate risk expert Laurie Laybourn about why high-end warming scenarios are often dismissed as “doomerism,” even though worst-case planning is standard in most fields. We break down how uncertainty in climate sensitivity and political derailment could push warming higher than expected and how climate shocks can trigger cascading failures across food systems, financial markets, and geopolitics. Understanding the climate endgame isn’t pessimism. It’s risk management.

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