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TIL that in 1969, the Colorado government detonated a nuclear bomb (twice as powerful as as the bomb at Hiroshima) underground for the purpose of fracking.

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via reddit.com

oBQd8 TIL that in 1982, Queen Elizabeth the Queen Mother was rushed to hospital when a fish bone became stuck in her throat, and she ended up having an operation to remove it. Being a keen fisher, she calmly joked when it was done: "The salmon have got their own back".
v1Jj TIL that The Room’s popularity as one of the best bad movies of all time can be traced back to a single critic, who after attending a screening in an empty theater, called all his friends, encouraging them to come to the theater and join him in mocking the film for its next showing
rw40 TIL wasps have complete voluntary control over the sex of their offspring.
j6MoN Today I learned bowhead whales can live over 200 years, and ancient stone points have been discovered underneath their skin from failed hunting attempts in prior centuries.
emr4 TIL Tobacco is fertilized with radioactive apatite, the radiation received from smoking a pack a day per year compares to receiving 2,000 modern chest x-rays a year.