› added 4 years ago

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TIL about the Eisriesenwelt, a natural limestone and ice cave in Austria. It is the largest ice cave in the world, extending more than 42km and the frozen lake inside the cave, during the Second World War, was used by skating athletes to train for the Olympics.

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via reddit.com

R7Jn4 TIL that the white mustache-looking skin above a pigeon's beak is called a wattle, and that it mainly serves to release excess heat from the bird's body. It's actually a trait that many birds have, such as the red piece of skin below a rooster's neck.
N7JB1 TIL: The first-ever solar-powered satellite, Vanguard 1, is "the oldest human-made object still in orbit" (plus some of its launch rocket). Launched in 1958, it stopped talking in 1964 but continues orbiting. The three sats older than it (Sputniks 1 & 2, Explorer 1) are no longer in orbit.
yVOeV TIL. Babies have around 300 bones in their body at birth. As they grow, the bones fuse together and become 206 bones by adulthood.
69nJ TIL In Japan people literally work themselves to death so often that they have a term for it. Karoshi
0oMj TIL Dr. Julius Wagner-Jauregg won a Nobel Prize for his cure for Syphilis. He’d treat it by giving the patient Malaria.