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TIL about the black hole information paradox, a conflict in physics between quantum mechanics and general relativity. The latter says that matter which falls into a black hole is lost when the black hole evaporates, but this violates the principle of information conservation in quantum mechanics.

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dL1K TIL the Kiwi bird lays an egg that can weigh up to a quarter of its body mass. Proportionally, that’s like a chicken laying a one-pound egg or a human giving birth to a four year old.
9ngm TIL the Khmer Rouge killed ~25% of Cambodia’s populace by making everyone work 12 hours daily on farms. Intellectuals were killed. Schools, religion, freedom to travel, money, factories, & hospitals were eliminated. The K.R. exerted control by limiting married couples’ visits & scattering families.
8eRJL TIL in 1974 after the Cadillac Michigan Vikings football team lost their first two games, the coaches played Kiss before their practices. Winning the remainder of their games, Kiss showed up next year for their Homecoming dance.
85J4 TIL The beginning of History is marked by the invention of the library. The first libraries consisted of archives of the earliest form of writing, cuneiform tablets discovered in temple rooms in Sumer dating back to 2600 BC. These archives mark the end of prehistory and the beginning of history.
5roB TIL: The “Fi” in “Wi-Fi” doesn’t stand for anything, it’s a play on words of “Hi-Fi”