› added 12 years ago

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TIL Kowloon Walled City was the densest area in the world, ever; 187 times the population density of Hong Kong

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VBOB TIL in the Middle Ages it was thought that the left testicle made sperm for girls. Men wanting sons would have it removed.
v1LGR TIL A cat's tongue is a high tech comb. The spikey things on their tongues are hollow so it can store saliva and transfer it to the skin through its fur.
lPaA TIL there is a place in Africa (Afar Triangle) where giant gaping cracks will randomly and suddenly form that shoot out blasts of superheated air at 750 degrees Fahrenheit.
4ekb TIL of “Operation Flex”, which took place in California in which an FBI informant pretended to be a radical Muslim, the members of the mosque quickly got a restraining order on him and reported him to the FBI.
D1Myg TIL Dave Grohl sang backup lyrics on Nirvana songs, but since his voice sounds much like Kurt's most can't tell