› added 2 weeks ago

5

TIL that Mammoth Cave was used as the site of an experimental hospital to treat tuberculosis. 16 patients lived in darkness in buildings constructed underground. 5 patients died and the experiment was ended within 5 months.

Read more nps.gov

via reddit.com

BoZd TIL in the US, it is legal for employers to set a maximum IQ for a job. The thinking is that people with high IQs pose a greater risk of quitting compared to those with average IQs.
1ar5W TIL that Saturn's rings will eventually fall into Saturn and disappear completely.
MXvV TIL that the Chinese philosopher Zhuangzi first proposed the “Matrix philosophy” after dreaming he was a Butterfly. “Now I do not know whether I was then a man dreaming I was a butterfly, or whether I am now a butterfly, dreaming I am a man”
D1jXj TIL that there are postage stamps specifically for sending postcards, and they are nearly $0.20 cheaper than letter stamps. (Context: I’m a millennial.)
Y7VAv TIL during the 1867 Royal Tour of Australia there were several riots (a child was killed in one), a drowning, Alfred Hall burning down (killing 3 more children) and Prince Alfred getting shot.