Can frozen onions make you cry?
Sep 30, 2011•23 min•Ep. 174
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Episode description
Why do onions make you cry and will a frozen onion have the same tear-jerking effect? What medicinal qualities does aloe vera possess? Is ice-crunching harmful? What's the best way to prop up metabolism as we age? What can I do about stress incontinence? Plus, news of what Tweets posted online can tell us about the population's collective mood, and a new way to tell who needs extra investigations after a heart attack... Like this podcast? Please help us by supporting the Naked Scientists
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