› added 12 years ago

98

TIL Abraham Lincoln supported colonizing blacks in South America, or sending them back to Africa.

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xVwLo TIL the Boeing 787 needs to be rebooted every 51 days to stop rounding errors causing it to crash
Ea5X TIL: The U.S. actually imports more oil from Canada than all of the Middle Eastern countries combined. Canada alone accounts for 40% of all U.S. oil imports
epOPn TIL that the world’s quietest room is so silent that you can hear your own blood flowing and bones moving. The Anechoic Chamber at Orfield Labs in Minnesota holds the Guinness World Record for being the quietest place on earth with a background noise reading of -9.4 decibels.
5Y50r TIL Medieval scholar Al-Biruni,after accurately measuring earth’s radius and judging by the size of Asia and Africa,predicted the existence of a landmass in the ocean between Asia And Europe,similar in size to the known continents and with similar geological features,likely inhabited by humans
gMg9y TIL Hedgehogs will rub a saliva-substance mixture (such as feces) on themselves in a process called Self Anointing. It's commonly thought this is to either absorb toxins for immunity or to deter predators through scent camouflage.