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TIL the U.S. Navy employed a dolphin, Tuffy, to regularly deliver tools and mail to scientists living in an experimental underwater laboratory.

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dD9wE TIL that most people can see their own white blood cells moving through their retinas
a8wy0 TIL that the third-ranked attraction in Cornwall, according to tripadviser, is the 'bude tunnel.' The bude tunnel is a short plastic tunnel linking a supermarket with a carpark. In contrast, most of the counties many surfing spots and historic sights are much further down the list.
4X8Ya TIL that there’s a scientist who won both Nobel and Ignobel prizes. Latter for levitating frogs, former for creation of graphene.
nkYP TIL “The needs of the many outweighs the needs of the few” has no classical history. It was first spoken by Spock in Star Trek II: The Wrath of Khan.
v1OGD TIL when John Williams first played Steven Spielberg the theme song for 'Jaws,' the director laughed and thought it was a joke. He then asked Williams if he could try something a little more swashbuckling, but luckily the composer was able to convince him otherwise.