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TIL that a mosquito’s digestive system deteriorates HIV before it can be transmitted to another victim.

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VMl44 TIL that for years, scientists didn't know what caused mysterious cave networks in South America. In 2010, they learned that the caves were actually tunnels dug by ancient giant sloths.
5Ppk TIL that the Police in the United States have a lesser mortality rate per 100k than the following jobs: Fishermen, roofers, farmers, taxi drivers, cement manufacturers, logging workers & airline pilots.
v1nmR TIL In 1974, the North Korean government ordered 1000 Volvo 144 cars as well as other manufacturing equipment from Sweden but never actually payed for any of it. They currently owe about $320000000 in debt to Sweden.
nWjR7 TIL: Water aerobics is popular among the elderly because it prevents overheating and fall injuries during exercise.
dDKDQ TIL, On saturn, it literally rains diamonds | BBC Earth