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TIL There used to be 4 billion American chestnut trees, but they all disappeared because of a fungus that kills them as saplings.

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x6XN1 TIL odor sensitivity correlates positively with sexual experience: Participants with high olfactory sensitivity reported higher pleasantness of sexual activities.
QJ64M TIL During the height of the Cold War, the US built an embassy in Moscow that was so riddled with eavesdropping equipment, by 1985 the building was abandoned after spending $136 million. Eventually, the embassy was taken apart brick by brick and rebuilt over 15 years at a cost of $240 million.
xVv5b TIL Despite being apex predators, orcas do not see humans as prey and they are even docile to them in some circumstances. There are no modern reports of fatalities caused by wild orcas.
ne9br TIL an estimated one in four cowboys in the 1870s and 1880s were black.
VvO8 TIL that ZZ Top’s Billy Gibbons has a 5-octave and 5 notes vocal range, which is bigger than that of Freddie Mercury, Axl Rose and Mariah Carey