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TIL That Heron of Alexandria created a mechanism that would automatically open the doors of a temple in the 1st-century BC

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N7ZBP TIL, Wisconsin uses briny water from cheese production to de-ice their roads in winter.
1vOr TIL in 2010, that Senator Roy Ashburn, who had voted “anti-gay” for all eight years that he was in office, was arrested on a DUI while leaving a bar with another man and now openly admits to being gay.
pjop TIL - Before Radar Great Britain built huge concrete structures that acted as a ultra sensitive microphone to detect incoming enemy airplanes.
QNv0p TIL The world's oldest love poem, The Love Song for Shu-Sin a.k.a. Istanbul 2461, was written in a cuneiform tablet and used in sacred fertility rituals.
N7mM1 TIL the Voyager I and II space probes, which are currently racing through interstellar space, each include a golden record with 115 analog-encoded photographs, greetings in 55 languages, a 12-minute montage of sounds on Earth and 90 minutes of music (including Chuck Berry's 'Johnny B. Good')