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TIL in 1907, passengers arriving at Ellis Island had to pass a medical exam to enter the US. Doctors used a secret code to mark passenger's clothes with chalk: 'H' indicated heart trouble suspected; 'L' suspected lameness, and 'X' suspected feeble-mindedness.

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Lkx5p TIL Catherine O'Hara, Donny Osmond, and Enrique Iglesias were all born with situs inversus, meaning their internal organs are all in the mirror-opposite place of where they should be
WkvvL According to Texas A&M’s Urban Mobility Report 2019, the average auto commuter spends an extra 54 hours in his or her car every year on top of the time it should actually take to get to the office. If you live in a city like Los Angeles, San Francisco, or New York, that figure doubles. In Los Angeles, for example, commuters spend 119 hours each year delayed in their cars—that’s almost three full weeks spent idling.
nenDr TIL There’s a liquid, that even if you’re submersed in it, allows you to breath normally and safely
AD0Pg TIL Beer was not considered alcohol in Russia until 2013.
0wyky TIL that workers can get desensitized to the odor added to natural gas - mercaptan - which can lead to catastrophic industrial accidents. This applies mostly to purging those gases indoors and workers relying on sense of smell rather than monitors, without realizing they can't smell it anymore.