› added 5 years ago

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TIL that in 2012 Facebook ran psychological experiments on users to study "emotional contagion" without consent of users or pre-approval from ethics boards. Facebook was able to prove that it could alter the moods of users by changing algorithms of users news feeds.

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via reddit.com

ovKR TIL: the snow in “It’s A Wonderful Life” is actually made of foamite (fire-fighting chemicals) mixed with soap and water and show out of a fan. The snow was silent during filming so the actors could recite lines live instead of re-recording them.
kB91 TIL the creators of Superman invented him first as a villain who looked like Lex Luthor.
J18jQ TIL about the Norway ''Oil Fund'', which was established in 1990 to invest the surplus revenues of the Norwegian petroleum sector. It currently has over $1,477 billion in assets.
VMxjB TIL: There are 20 non-canonical books (books not in the Bible) that are referenced in the Hebrew Bible, most of which are lost works.
jNa1p TIL that the Yazidi minority in Northern Iraq have survived 72 attempted genocides