The Tongan volcano triggered record-breaking lightning and a never-before-seen tsunami; Whale researchers do anatomy with heavy machinery to understand why whales don't choke on their food; Darkness doomed the dinosaurs — the extinction asteroid turned out the lights on Earth; Plastic-collecting ships could use the waste for fuel while cleaning up the ocean; Regrowing knee cartilage with an electric boost; Researchers call for a new awareness of scientific colonialism; Quirks Listener Question: In which direction will the James Webb Space Telescope be looking?
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