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TIL that a few billion years ago an Earth day was only about 19 hours

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Gp7N TIL that cetaceans blow bubble rings seemlingly for amusement
mLXx TIL During the Vietnam War, President Lyndon Johnson threatened CBS News that if it didn’t ‘cleaned up its act,’ after showing US Marines burning villages, the White House would 'go public’ with the reporter’s alleged “communist ties.”
9YlOQ TIL the Anal Sampling Mechanism is a reflex which detects the contents of the rectal vault and allows for voluntary flatulation to occur without unexpected voiding of feces.
1aMXr TIL Elastration is a bloodless method of male castration by simply banding the scrotum until it drops off. It is simple, low cost, and requires minimal training.
wL4E7 TIL that Paul Newman is the only male Hollywood star to ever feature in a Lux soap ad.