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TIL there are over 3.7 million ways to scramble a 2x2 Rubik’s cube

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6EXnl TIL "End of the world" predictions are almost as long as the whole of modern human civilization. There are predictions about the end of the world going back to the time of Jesus Christ and it hasn't stopped.
YpV6v TIL that dragonfly-like Meganeuropsis permiana which flew around 300 million years ago was 1.5 feet long with a wingspan of 2.5 feet. The biggest insect that has ever existed. If we cloned one today, it would probably suffocate because it needed the 30% Oxygen atmosphere present then (20% now).
Zpkoa TIL a form of Hormone Replacement Therapy, Premarin, gets its name from the urine of pregnant mares (PREgnant MAres’ uRINe), from which the preparation is manufactured.
neQA9 TIL Mealworms are able to consume various forms of plastic, and can eat Styrofoam containing a common toxic chemical additive with no ill effects, and still be safely used as protein-rich feedstock for other animals.
7rbYX TIL: Pheromone in baby mouse tears makes female mice less interested in sex.