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137

TIL most birds in our world are monogamous

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wop9J TIL about Pathological Demand Avoidance (PDA), a disorder characterized by extreme, uncontrollable anxiety in the face of anything perceived as a "demand." Those with PDA may try to avoid not only the demands of others, but also the demands of their own body, such as for hunger or sleep.
N7Xb1 Eighty-five years so far. The pitch-drop experiment—really more of a demonstration—began in 1927 when Thomas Parnell, a physics professor at the University of Queensland in Australia, set out to show his students that tar pitch, a derivative of coal so brittle that it can be smashed to pieces with a hammer, is in fact a highly viscous fluid. It flows at room temperature, albeit extremely slowly.
7KKL TIL there are potentially more tigers living in secret in the united states than in the wild
6p8w TIL chunks of whale puke sell for as much as $150,000. After aging, the chunks become known as ambergris, developing a sweet musky smell. The material is highly sought after by high-end perfume manufacturers.
y4gp TIL Frog and Toad are gay… And so was the author