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TIL Having a light underside and a darker top is a form of camouflage known as countershading. Animals with reverse countershading, like the honey badger, stand out more as a warning that they can defend themselves.

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WkwLB TIL of Ranavalona, a ruthless ruler of Madagascar. During her reign the population of Madagascar is estimated to have declined from around 5 million to 2.5 million
16yY7 TIL Some People Base Romantic Compatibility on Blood Type
P1EKL TIL that there are approximately 2,500 kilometers (1,600 mi) of catacombs beneath the city of Odessa.
woV77 TIL 17 yr old future President Herbert Hoover showed great talent on the math entrance exam for Stanford but he never finished high school. He received remedial tutoring in August before he was accepted into the tuition-free university, and he vowed to help other students get a Stanford education
6yew TIL Argentine ants have a worldwide mega-colony, and if they get in an airplane and travel to a different continent, they will be welcomed in the foreign branch of the colony