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TIL that Humpback whales have recovered to 93% of their pre-whaling population of 27,000 after being reduced to only about 450 in the mid-1950s.

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e6l4 TIL that Jason Lee, the main actor in ‘My Name Is Earl’ used to be a professional skateboarder and is credited with inventing the '360 flip’
16nbr TIL Waist chop or waist cutting, also known as cutting in two at the waist, was a form of execution used in ancient China. As its name implies, it involved the condemned being sliced in two at the waist by an executioner.
1o4X TIL The earliest form of RAM stored data as sound waves. Bits would be ‘thumped’ into a tube filled with mercury, then read by sensor on the other end. The computer was free to do other things during the relative eternity it took the bits moving at the speed of sound rather than the speed of light.
5VJvP TIL about Nan Madol, historic capital of the Saudeleur Dynasty of Micronesia. It has been called the Venice of the Pacific for its multiple islands and channels.
5VBEk TIL Eating hair can result in large, undigestible masses in the stomach called "bezoars" that may require surgery to remove