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TIL The reason we find some smells bad is because our brains have evolved to react with disgust to the smells of thing which are major disease vectors - things such as vomit or rotting carcasses. The greater the risk of disease, the more offensive you would find the smell.

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NXeLN TIL the Tsar Bell has been destroyed in fires twice. The current version is the largest bell in the world, and has never been rung. However, students at UC Berkeley simulated it's ring in 2016.
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ZPba TIL that “stranger danger” is a myth: Children are twice as likely to be killed by a relative and 20x more likely to be killed by their parents than at the hands of a stranger.