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TIL the tail feathers of Birds of Paradise are so black that they absorb 99.95% of all light, just .01% less than the blackest human-made nanomaterial, and help make brightly-colored patches stand out more during mating dances

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0d47L TIL 90% of workers in Iceland are in a union
r9Y1 TIL only about 3% of US currency exists in tangible form. The other 97% exists only on computers.
BrGnb TIL that the longest stretch of highway in the United States without a gas station is I-70 in Utah. There are no services, no exits, no towns and no legal way to turn around for 106 miles between Green River and Salina
v1v4D TIL that Mount Everest is not the tallest mountain on Earth if measured from base to summit (Mauna Kea in Hawaii is). Mount Everest is only the "tallest" in terms of summit altitude above sea level.
P17aZ TIL using the instructed amount of washing detergent leaves clothes dirtier