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TIL that snakes have forked tongues to be able to smell in three dimensions. By picking up odours from slightly different locations they are able to tell the direction and source of the smell.

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aweNM TIL The Chinese Paddlefish, One Of World's Largest Fish, Has Gone Extinct
5YlGp TIL Sublime made 40oz. to Freedom by sneaking into the music department at CSU-Dominguez Hills after hours and recording all night.
a8YJy TIL that the world's largest desert is the Antarctic Polar Desert, which covers over 5.5 million square miles. ❄️ I'm pretty sure I wouldn't want to get lost there.
neAMW TIL that a genetic mutation can cause a person's bone density to be as 8 times as high as normal people. People with such mutations have known to survive car crashes with no injuries but cannot swim as they will 'sink like a stone' in water.
YreG TIL Stethoscope was invented because the shy French doctor felt uncomfortable placing his face on a younger woman’s chest.