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Til that one out of every 5 mammal species is a bat.

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lodaN TIL of a device called Stentrode that functions as a brain–computer interface (BCI). It allows people with paralyzed or missing limbs to use their neural signals or thoughts to control computers and other devices. Human trials using the implanted device have begun.
GYwV1 TIL In 1907 Standard Oil developed the the Mei Foo kerosene lamp, which translates in Chinese to “beautiful confidence.” In its first year, more than 850,000 lamps were sold in China at around 7.5 cents each, and could stay lit for more than 240 hours on a single gallon of kerosene.
KO5EG TIL that ancient Babylon had suburbs. A 539 B.C cuneiform clay tablet stating: "Our property seems to me the most beautiful in the world. It is so close to Babylon that we enjoy all the advantages of the city, and yet when we come home we are away from the noise and dust"
Vx00 TIL The U.S provides GPS service world wide for free, while U.S tax payers pay $2 million dollars a day to keep it operating.
jNp9N TIL that early Italian renaissance people, such as Leonardo da Vinci, have not seen or tried tomatoes in their lives.