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TIL that no place in the continental US has an antipodal point on land. Dig a hole straight through to the other side of the Earth and you will come up in the Southern Indian Ocean. Only the very northern tip of Alaska and the state of Hawaii do; dig from Honolulu and you will surface in Botswana.

Read more antipodesmap.com

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91QM TIL that the Romans substituted real criminals into plays for punishment, so if a character died in the play’s story or plot, a real criminal would die on stage.
R7VKl TIL about Marion Stokes, a Philadelphia woman who began taping whatever was on television in 1979 and didn't stop until her death in 2012.. The 71,000 VHS and Betamax tapes she made are the most complete collection preserving this era of TV. They are being digitized by the Internet Archive.
rRv7M TIL that Eratosthenes, a Greek mathematician and astronomer (276 BC), measured of Earth's circumference by using the shadow angles from the sun in two locations. He calculated it was 39,375 km, which is 1.4% less than the real number of 40,076 km
rwjo TIL In Back to the Future the actress who played Jennifer couldn’t return for Part II due to her mother getting sick. This meant that the closing scene of Part I had to be re-shot with the new actress. They managed to re-film it with a near shot-for-shot match of the original.
oOMW TIL TLC was founded in 1972 with the help of NASA and was an informative and instructional network focused on providing real education via television; it was distributed at no cost by NASA satellite.