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TIL Apollo 17 geologist astronaut Harrison Schmitt served in the U.S. Senate, becoming the only "natural scientist" in the Senate since Thomas Jefferson was Vice-President. Schmitt presently is Adjunct Professor of Engineering, University of Wisconsin-Madison, teaching "Resources from Space"

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via reddit.com

1474 TIL David Hayter (best known as the voice of Solid Snake in MGS) wrote the screenplay for the first X-Men film and cowrote the screenplay for Watchmen and X2
noQG TIL For those who have trouble sleeping researchers say that 1 week of camping, without electronics, resets our biological body clock and synchronizes our melatonin hormones with sunrise and sunset.
x6P70 TIL the chromosomal cap, called telomere, grows shorter during cell division. Researchers also found out that most old people have shorter telomeres, that some telomeres had never shortened in those who lived past 100 years old, and that cancer cells don't die because their telomeres don't shorten.
oRw08 TIL that Eratosthenes paid a guy to walk 800 kilometers to a tower to measure the length of it’s shadow & that’s how we found out the earth was round.
W0VA TIL that America is the only developed country on earth where the current generation is less educated than the previous generation