› added 4 years ago

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TIL that alexandrite, a gemstone found in the Ural mountains, will shine different colours if it is viewed under natural or artificial light

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l7OL5 TIL that cricket was played at the 1900 Paris Olympics. Only Great Britain and France competed, with Britain winning Gold. The French team mainly consisted of British expatriates living in France.
m8DY TIL There is a live webcam on the back of a tortoise that you can watch 24/7
lomwr TIL Nudge Theory is a method of influencing behavior of groups or individuals that uses indirect suggestions to achieve non-forced compliance. It's so widely used, governments around the world have setup "Nudge units" to influence public thinking and decision making.
LklPP TIL that in the 19th century, obstetricians did not wash their hands before examinations. In 1861 a guy called Semmelweis recommended hand washing to decrease very high mother mortality rates. He faced fierce opposition, had a nervous breakdown and died in a mental hospital 4 years later.
vpK8 TIL Retired NYC subway cars are thrown into the Atlantic Ocean to help create artificial reefs.