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TIL most of the path of lightning strikes we see comes from the ground.

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XE8JQ TIL in the rushed rampup to train military pilots during World War II from a thousand graduates in 1939 to hundreds of thousands by 1945, over 15,000 Americans died in nearly 30,000 crashes in stateside training alone
nePar TIL the US Air Force accidentally dropped an atomic bomb from a plane on a South Carolina family's backyard in 1958. Luckily, the bomb wasn't fully functional and the only casualties were a flock of chickens.
GY6LG TIL that on August 16, 1858, Queen Victoria sent a message of approximately 100 words to U.S. President James Buchanan. It took nearly seventeen hours to transmit by Morse code through about 2,500 miles of cable at a depth of often more than two miles.
wLeg6 TIL Blowing out birthday candles increases bacteria on cake by 1,400% more bacteria
j6XJj TIL that AT&T introduced 'Wirephoto' in 1924 that allowed photos to be sent over telephone lines