› added 4 years ago

237

TIL that Alexander Graham Bell tried to teach his dog to talk

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oRZaE TIL "Jingle Bells" was one of the first songs to broadcast from space, in a Christmas-themed prank by Gemini 6 astronauts Tom Stafford and Wally Schirra.
eKnJ TIL Soy sauce contains 10 times the antioxidants of red wine.
9Y40G TIL that Mansfield Cumming, first director of Secret Intelligence Service (MI6) started using semen as invisible ink during World War 1, but they stopped it because of the smell and questions regarding the masturbatory habits of the agents involved.
9YJp6 TIL the average human body temperature has decreased over the last century and is likely due to improved health. Temperature of men born in the early to mid-1990s is on average 1.06 F lower than that of men born in the early 1800s.
b95x0 TIL that there were only three people in the United States were qualified to pack the parachutes for the Apollo 15 mission in 1971. Their skills were deemed so vital that they couldn't ride in the same car together as an accident would cripple the space programme.