› added 2 years ago

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TIL The US Chamber of Commerce tracks how lonely American cities are.

Read more chamberofcommerce.org

via reddit.com

NZXE TIL that trains have conical wheels because there is no differential; when the train turns one wheel will travel a greater distance than the other
XEPAj TIL the human Coronavirus causes approximately 15% of cases of the common cold
VBm5k TIL About firedamp whistles, a device designed to detect flammable gases in a coal mine by blowing local air and a reference gas through whistles and listening for a "beat" caused by a slight difference in the frequency
jAkR TIL In West Virginia in the late 1800s you could get admitted to an insane asylum for “Novel Reading”.
OBee TIL that apple seeds contain 0.6mg of hydrogen cyanide per gram of seed, meaning that if a person were to eat about half of a cup of apple seeds, he or she would die of cyanide poisoning.