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TIL Bicycles are the most efficient machine ever made (98% efficiency)

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via reddit.com

YemA TIL 13% of the world’s adults – 630 million people – say they would like to leave their country and move somewhere else permanently.
4QMo TIL in 1957. in order for Sony to market its TR-63 transistor radio as “pocketable”, salesmen wore shirts with specialized, enlarged pockets in order to accommodate the large device.
WkvJ9 TIL About the Jefferson Davis Presidential Library and Museum. It was Rededicated as Recent as 2013. The Only Presidential Library Dedicated to a President of a Different Nation. Davis was Famously the President of The Confederate States of America.
XEO1Q TIL following the suicide of a the famous Korean actor Choi Jin-sil the frequency of suicide in Korea increased by 162,2% for 3 weeks confirming the "Werther effect," that a suicide can cause others to also commit suicide
RrE7 TIL that Mikhail Kalishnikov, inventor of the AK-47, greatly regretted having invented the weapon, and is quoted as saying “I would prefer to have invented a machine that people could use and that would help farmers with their work - for example a lawnmower.”