› added 7 years ago

147

TIL that not rinsing the mouth after brushing teeth, make the teeth healthier, cleaner and less prone tocavities

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aw4jo TIL that up until World War I, it was common for both men and women to have long hair. The unsanitary conditions of trench warfare caused men to adopt short hair to avoid lice and fleas. Due to the number of war veterans and the prestige granted to them, short hair became the dominant style for men.
6EnD8 TIL that the Elvish language from LOTR is the 46th most popular language studied in the U.S.
woGeW TIL that in the 60's they had pacemakers with RTG's in them, a type of nuclear battery that uses an array of thermocouples to convert the heat released by the decay of a suitable radioactive material into electricity.
oBxnW TIL the Boeing factory in Seattle is so massive that rain clouds began to form inside the facility until a state-of-the-art air circulation system was installed
ANpOn TIL the Nokia 9000 Communicator was the first mobile phone with dial-up internet