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Stream the full The Secret Genius of Modern Life Season 1 Episode 4 movie online for free in crystal-clear HD quality. No downloads required—just press play and enjoy the action, complete with English subtitles for an enhanced viewing experience.

Hannah Fry discovers why innovations in meat packing almost derailed the electric car revolution and how a breakthrough in camcorder batteries led to Elon Musk's electric empire, as well as demonstrating how not to drive a multimillion dollar prototype car of the future.