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TIL underwater construction can be achieved by creating dry work areas underwater inside of an enclosed space called a cofferdam

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QJyX6 TIL The typical brain comprises about 2% of the body’s total weight, but uses 20% of its total energy and oxygen intake.
6E5vJ TIL the lyric “they stab it with their steely knives” from “Hotel California” by the Eagles is a nod to Steely Dan for the free publicity they gave them when the Eagles were mentioned in a lyric from Steely Dan’s song “Everything You Did” which goes “turn up the Eagles, the neighbors are listening”.
JYdrl TIL a computer algorithm created by Stanford University can identify a human's sexuality based on photographs. If shown five images of any guy, it can predict if he is gay with a 91% accuracy. The “gaydar” program has not been made public.
1abG8 TIL David Bowie's eyes were both blue. One pupil was just permanently dilated (anisocoria).
0woGv TIL Queen Victoria's first language was German, and she required two tutors to somehow reduce her German accent in English. Her children all spoke German too and they switched between English and German within the family.