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TIL an uncontacted tribe still inhabits an island in the Indian Ocean, living as simple hunter-gatherers. They are vigorously hostile to outsiders, and have not yet developed early technologies such as agriculture or writing.

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QJgQ9 TIL that "twitchers" are committed bird-watchers who travel long distances to see new species. They have their own jargon, including "nemesis" for a bird that has eluded them despite multiple attempts to see it, and "plastic" for a bird that escaped from captivity rather than being genuinely wild.
VBYgm Today I learned that when you are boiling water for potatoes, pasta, veg, etc, that, once the water has reached a full boil, you can turn the heat down by a large amount, and the water will continue to be a boil. For cooking.
E1jpp TIL of the Federal Theater Project. It was a program to employ artists during the great depression. The Federal Theatre Project was distinguished for its focus on racial injustice. At its conclusion, 65 percent of its productions were still presented free of charge.
Bdwk TIL Henry Ford’s first Model-T was built to run on hemp fuel and had hemp plastic panels whose impact strength which were 10 times stronger than steel. If hemp were planted on 6% of the US landmass, it could replace all current demand for oil and gas.
6bEQ TIL at a Marine Mammal Studies Institute, dolphins were trained to turn in trash that fell into the pools in exchange for fish. One dolphin was smart enough to hide pieces of paper under a rock, tearing off smaller pieces from the paper in order to get more fish out of it.