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TIL Cheetahs meow like house cats

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wXwY TIL that the ancient Romans used urine as toothpaste, mouthwash and laundry detergent, the urine collection business was so lucrative that Emperors Nero and Vespasian imposed urine taxes.
E1llw TIL that a few months into the Flint Water Crisis, GM's truck assembly plant stopped using municipal tap water for production because it was corroding engine components
kJ145 TIL Common Smoke detectors in Russia use weapons grade Plutonium-239 for the source.
jN6VN It depends on who you are and where you live. Humans thrive in Kuwait City, where average highs top 110° for several months a year. But extended runs of hot days and warm nights do lead to spikes in mortality, and climatologists expect an increasing number of heat waves in years to come.
Dm4J TIL It is predicted the Oil Age will end in 2059