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TIL Canadian astronomer and renowned eclipse chaser J. W. Campbell traveled the world for 50 years trying to see 12 different eclipses. He ran into overcast skies every time.

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7rOpp TIL of Sonny Graham, recipient of a donor heart from a suicide victim who went on to marry the suicide victims wife. After 12 years of marriage, Graham also ended his own life.
OGQRe TIL that in 1963, the British army tested how long a WWI Vickers Machine Gun could fire. It fired 5 Million Rounds, Firing Continously for Seven Days, an Average of 500 Rounds Per Minute for 10 000 Minutes.
5YEKD TIL A&W's 1/3 pound burger didn't sell well against 1/4 pound competition because many incorrectly believed 1/4 was more than 1/3
XA1X TIL that Pythagoras believed that ‘So long as men slaughter animals they won’t stop killing each other.’
r7gy TIL humans have a relatively low level of genetic variation because we are all descendants of ~10,000 humans that survived a massive extinction event ~70,000 years ago. One tribe y'all.