Today, how the brain harnesses immune cells to clear burned out fats during sleep: does this protect from Alzheimer's disease? Also, the nutrient-rich guano of seabirds that shaped society in ancient Peru, fast footage reveals how kangaroos hop faster at no extra energy cost, and how horses whinny! Like this podcast? Please help us by supporting the Naked Scientists

Brain fats cleared during sleep, and bird poo powered Peru

The Naked Scientists are a media-savvy group of physicians and researchers from Cambridge University who use radio, live lectures, and the Internet to strip science down to its bare essentials, and promote it to the general public. Their award winning BBC weekly radio programme, The Naked Scientists, reaches a potential audience of 6 million listeners across the east of England, and also has an international following on the web.

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Brain fats cleared during sleep, and bird poo powered Peru

Brain fats cleared during sleep, and bird poo powered Peru