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TIL “Don’t Mess with Texas” was created as part of a marketing campaign aimed at 16-24 yr old males to stop throwing their trash all over Texas.

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R7Gmw TIL That levels are sometimes referred to as "spirit levels" because the fluid inside was commonly colored spirit or alcohol for contrast. Today the fluid is usually a dyed ethanol because it doesn't freeze as easily and provides less friction for bubble movement when compared to water.
6E7RX TIL that the Forest of Dean in Gloucestershire has been a protected forest since 1066, when the Normans reserved it for royal hunting.
rX8x TIL that this chair scene in Austin Powers wasn’t scripted. The tech team was messing with Mike and he stayed in character so they just kept the scene.
7dPr TIL that technically a diamond will not last forever; given enough time, a diamond will decay into graphite
9w51r TIL the Voyager missions launched when it launched, so as to take advantage (for the purpose of gravitational assist) of a rare alignment of Jupiter, Saturn, Uranus and Neptune, that happens only once, every 175 years.