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TIL research shows that cats recognize their owner’s voices but choose to ignore them

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via reddit.com

dpL9 TIL that Einstein and his wife once visited the enormous Mount Wilson Observatory with astronomer Edwin Hubble. When told that Hubble’s telescopes were revealing the ultimate shape of the universe, Einstein’s wife nonchalantly responded, “Well, my husband does that on the back of an old envelope.”
QJ9wa TIL After Germany's surrender in WWI, and the subsequent limitations on their aircraft industry, Anthony Fokker moved his factory to West Virginia.
bQ1j TIL the deepest hole ever dug was only .002% of the way to the center of the earth
8aDN4 TIL Microsoft tried to buy Nintendo in the days where they started to enter the gaming market with the Xbox, but they got laughed out of the meeting room instead.
4XApJ TIL that in South Korea it is illegal to sell phones with unremovable software that is not critical to system operation or maintenance.