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TIL Since the late 1950s, aerospace engineers have used the term "unobtainium" when referring to unusual or costly materials, or when theoretically considering a material perfect for their needs in all respects, except that it does not exist.

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Y56x TIL absinthe doesn’t actually make you hallucinate
Lo1P TIL A small orphan teen named Audie Murphy was rejected by the Navy and Marines in 1942, but later went on to become the most decorated soldier in American history, and a famous actor. He dropped out in the 5th grade to support his family after his father abandoned them, and his mother died.
9Ynn7 TIL that Guinness world records have changed their business by becoming a publicity stunt for the Rich and The Powerful; as they have changed from recording and archiving records to a place where people can simply pay money to get easy records to break or simply making a new one.
WkK19 TIL the Suez Canal has a predecessor, the Canal of the Pharaohs, linking the Nile to the Red Sea in ancient times. The completion date is uncertain and it was closed in 767 AD.
bOaE TIL That if you see a cockroach in your home, in broad daylight, that means that you have a major infestation. This is most likely true because cockroaches hate the light, and if one ventures out during the day it’s because there are so many it was forced into the light.