› added 8 years ago

387

TIL that sand is a finite resource and we are running out.

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rRJ04 TIL the American Humane Association Film Unit (responsible for "No Animals Were Harmed" message in films) formed in 1940 due to outrage about a horse that was thrown off a cliff and drowned for the 1939 film Jesse James. Before then trip wires were used to film horses falling over often killing them
XL6P TIL it costs more to keep a prisoner in prison, than to send a student to Princeton.
oR0pL TIL that the first webcam ever made wasn’t for video calls it was created by scientists to check if a coffee pot was empty.
lMeK TIL that human semen has health beneficial properties including vitamins, increasing fertility in women and contains mood-elevating hormones.
jNJOE TIL we perceive sound pitch logarithmically. The notes in a scale sound like they rise in equal steps but their vibrational frequencies are rising by equal multiples.