› added 9 months ago

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TIL Dasani sources water from municipal pool water in some California locations

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Z8oeY TIL in 1976, 9-1-1 was serving only 17% of the population in the United States. By 1987, 50% of the US population had access to 9-1-1 emergency services. Today, 7% still do not have 9-1-1.
VBm5k TIL About firedamp whistles, a device designed to detect flammable gases in a coal mine by blowing local air and a reference gas through whistles and listening for a "beat" caused by a slight difference in the frequency
4Xl8N TIL about the ~2,000 yr old Roman aqueduct in Segovia Spain. 15km long. Almost 100 ft at highest. Almost 2,000 km by road to Rome. Carried water into the 1920's
w7gP TIL that in early feudal Japan there was a class of female Samurai called Onna-Bugeisha who commonly engaged in battle alongside the men and were trained in the use of weapons to protect their household, family, and honour in times of war.
pMO8 TIL That One Japanese Company (YKK) Makes Half Of The World’s Zippers