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TIL that yellow teeth are stronger than white ones, since the natural colour of our teeth is light yellow or grey. Products which whiten our teeth can permanently weaken them.

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yVVeM TIL that the brown-headed cowbird is an obligate brood parasite; it lays its eggs in the nests of other small birds. Once hatched the young cowbirds are fed by the host parents at the expense of their own young. More than 140 different species of birds are known to have raised young cowbirds.
W7ePX TIL that the Financial Modeling World Cup is a competition for Excel enthusiasts who solve real-world case studies by creating financial models, with a $25,000 prize purse.
7rg4x TIL Covert consciousness "is consciousness that cannot be detected by bedside examination. Studies . . . suggest that approximately 10 percent of those believed to be in a vegetative state or a low-level minimally conscious state . . . can actually follow commands during functional MRI or EEG tests"
R7Pna TIL about ancient takeout in the city of Pompeii.
XRGP TIL The South African government ordered sculptors to remove a bronze rabbit they hid in the right ear of a Nelson Mandela statue. “We don’t think it’s appropriate because Nelson Mandela never had a rabbit on his ear”