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TIL the most famous sound effect from the cartoon series Tom and Jerry -- Tom's leather-lunged scream -- was created by recording Hanna's scream and eliminating the beginning and ending of the recording, leaving only the strongest part of the scream on the soundtrack.

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vPX14 TIL that during the Vietnam war there were 7 discharges, 17 AWOL cases, 2 disciplinary charges, 12 complains to congress and 18 non-judicial punishments in every 100 groups of soldiers, whilst one third report some form of consistent drug abuse
EYax TIL Tesla cars are only one gear. the electric powertrain (Nikola Tesla’s AC induction motor) is only the size of a watermelon and directly spins the back wheels without any driveshaft or transmission. you can break by releasing the gas pedal and that also recharges the battery (@ 22:39)
9Yr1m TIL about neutral Moresnet, an formerly independent village-nation between Germany and Belgium that continued to exist until 1920. At it's height, it housed 3500 citizens and the largest zinc-mine of Europe. The flag colors came from a mining company and it's citizens were considered stateless
M7xv0 TIL Thomas Jefferson paid journalists to report that John Adams was a hermaphrodite as part of a smear campaign
6nDX TIL the standard measurement of the kg for the past 127 years is ‘Le Grand K’, a platinum and iridium cylinder that was forged in 1879 and currently resides inside a vault in France.