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TIL that animals re-evaluate what they experienced during the day in their sleep and thereby secure knowledge, meaning they have dreams as complex as a human's.

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oBbY8 TIL about potash evaporation ponds in the Utah desert. Depending on the amount of potash inside the pools, they can turn turquoise, orange, yellow and even white. About 700 - 1000 tons of potash are produced very day, which can then be used to fertilize plants and treat industrial water.
R7119 TIL that the word "mudita" is, in a sense, a kind of opposite of "Schadenfreude": mudita is a kind of sympathetic joy -- the taking joy or delight or pleasure in the pleasure or success of others.
yVd4w TIL The Hindenburg, the largest aircraft ever built, was partially constructed out of material salvaged from R101, a British airship that had previously held the same distinction, after it was destroyed in a fatal crash in 1930
E1g4X TIL that Saturday Night Live has a branch show abroad SNL Korea
yBdM TIL in 1917, WWI U.S. troops in Paris stopped at the grave (composed of soil from the U.S.) of French Revolutionary War Hero, Marquis de Lafayette, and proclaimed “Lafayette, we are here!”