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TIL Ambidextrous people have significantly lower IQ’s than left/right handed people

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GAN9G TIL that a "Munro" is any mountain in Scotland with a height of over 3,000 ft, while a "Marilyn" is any hill or mountain in the British Isles with a prominence of over 150 metres.
Lk0J0 TIL that the term "riding shotgun" comes from the word "shotgun messenger" referring to the guard sitting next to the Stagecoach driver who used a shotgun to ward off robbers and miscreants. This found its way into popular culture through Hollywood's love of Westerns
7vKL TIL during WWII the US deployed scout dogs that were able to warn their handlers of the presence of Japanese forces at ranges up to 1,000 yards, allowing the Americans to avoid ambushes and gain the element of surprise.
a07y TIL The episode of the Simpsons where the kids are snowed in the school at Christmas was based on a true story that happened to one of the writers
kOnNE TIL nudibranchs (sea slugs) can steal the sting of their prey. They do this my eating the tentacles of a jellyfish for example and storing the stinging cells for later use.