› added 4 years ago

43

TIL that modern military submarines have a rescue buoy that releases during an emergency, and it remains attached to the submarine by a cable. Once on the surface it can indicate to rescuers the position of the submarine, and may include a telephone for communication with the trapped submariners.

Read more wikipedia.org

via reddit.com

dD7Wj TIL of the Tahitian Dog, an extinct dog breed native to Tahiti that were specifically bred for human consumption. They were fed a completely vegetarian diet and were notably served by locals to early Western explorers to the area.
mx0PR TIL that the founders of Insulin sold the patent to a University for $3, which then gave pharmaceuticals the rights to manufacture Insulin without royalties and to improve the formula in order to make the drug better and accessible to as many diabetics as possible at the lowest cost possible.
GAPv7 TIL about the Ainu, the original indigenous inhabitants of Japan
ndYY TIL Tesla once paid an overdue hotel bill with a model of his “death beam”, warning hotel staff to never open it. After his death in 1943 the box was pried open and found to contain nothing but harmless old electrical components.
mxnZY TIL that if a male lion and female tiger mate you get a Liger, however if you mate a female lion and male tiger you get a Tigon