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117

TIL bioluminescent sharks exist

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aMKb TIL Ejectees of a Martin Baker Ejection seat join the “Ejection Tie Club,” and receive a pin and tie.
a87eZ TIL Retention rates among students studying engineering are among the lowest of all majors
m1nmv TIL fuel made from grass is called "grassoline"
gmoy TIL The U.S. ranks 3rd in liking the United States.
VMX48 TIL that humans are the only mammals with a very distinct and visible iris and pupil in contrast with the rest of the eye (sclera) which is white, probably because we evolved as more cooperative animals so following another person's gaze became important in communications.