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TIL that birds not only can see in Ultraviolet, but that their feathers have patterns which can only be seen in UV. This explains why the males and females of certain species may look the same to us, but in reality, are very different in eachother’s eyes.

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M7VBA TIL about Robert Williams Daniel, a Titanic survivor who it was claimed, swam naked for several hours in the bitterly cold water, before being rescued.
4kDxo TIL from 1775 - 1779, the United States printed a currency called "Continental Currency." The currency was rapidly depreciated due to excessive printing and banknotes were so worthless that people stopped using them after 1781.
b9L10 TIL in 1988 the UK de-recognised the Cambodian embassy in London in order to enter the building and remove squatters who had occupied it since 1976. Under the 'adverse possession' common law, the squatters would have gained title to the building following twelve years of continuous occupation.
E1ERP TIL although the brain represent only 3% of our body weight, it consumes up to 20% of the body's energy (calories). These 20% consumption is only for the regular activity and to keep things in order not for studying or thinking too hard.
Ype67 TIL Dr. Elsie Inglis founded the Scottish Women's Hospitals Committee in order to create a mobile army hospital staffed by women. By 1917, 4 hospitals and 14 medical units had been created, staffed by over 1000 women doctors, nurses, orderlies and drivers.