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TIL that George Washington originally declined a presidential salary however he ultimately accepted the payment to avoid setting a precedent whereby the presidency would be perceived as limited only to independently wealthy individuals who could serve without any salary.

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PAoE TIL that male survivors of Ebola Virus Disease can harbor active virus in their sperm, and transmit the disease sexually months after their own recovery.
wL4PE TIL "Spandau" was the manufacturer of Nazi machine guns - when the weapon was fired at someone's shins they would dance around, in a "Spandau Ballet"
pYdme TIL that we can never travel at the speed of light according to our current understanding of the physics of the universe because to travel at speed of light, we would need infinite amount of energy which is not possible. Quite a revelation after watching 100s of sci-fi movies.
ndNP TIL: Glaucus, a members of the nudibranch family which are commonly referred to as sea slugs, can use the stinging cells from their prey as a defense mechanism. It does this by passing them from its gut to the surface of its skin.
M7gOV TIL: Life expectancy in the USA (77.28 years) is almost 6 years lower than Australia (83.20 years)