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Transplanted brains, sugar taxes and satellites

Human brain tissue transplants wire themselves into rat brains, signs sugar taxes cut obesity, and the science of satellites.

Dr Chris Smith and the Naked Scientist team present the latest science news, analysis and breakthroughs.

This week: Human brain tissue transplants wire themselves into rat brains, signs sugar taxes cut obesity, and the science of satellites, including the company planning to forge new metals in orbit.

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53 minutes

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