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TIL bees not only sleep, but also take little bee naps on flowers

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e0RO4 TIL the Netherlands is a leader when it comes to food production due to innovations in agricultural techniques which drastically improve efficiency. Growing a kg of tomatoes in the Netherlands uses 9.1L of water (1.1 gallon/lb). The global average is over 210L of water per kg (25.6 gallon/lb)
ANJan TIL Horse semen is the most expensive liquid
GAgbQ TIL the peace symbol is a combination of the semaphore letters N and D, which stood for Nuclear Disarmament
LQQgQ TIL As a boy, Neil Armstrong worked at the local pharmacy for 40 cents/ hour in order to pay for $9/hr flight lessons, taking him about 22 to 23 hours of work for each lesson
LkBQZ TIL in 2007 police seized a photo of two nude children from Elton John's art collection as part of a child pornography investigation