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TIL The term Smoke testing comes from the initial test of a circuit board. If there’s no smoke coming out when it’s first powered up, then the board’s probably okay.

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W0n8 TIL that while Saudi Arabia abolished slavery in 1962, Sheikh Saleh Al-Fawzan publicly endorse the practice in 2003, stating “Slavery is a part of Islam” and whoever wants it abolished is “an infidel.”
arjb TIL Mao Zedong ordered the people of China to kill sparrows because they steal grain. Since sparrows also eat insects, their absence caused a locust epidemic that ravaged crops and killed millions of people.
R7dr4 TIL that in 2018, it cost 2.06 cents to make a penny. This means that the US Mint loses money from every penny they make (in 2018 they lost $90 million). Even more, this means that if you melted down a penny it would be worth more than its face value.
GANBQ TIL that the Treaty of Versailles included a clause demanding Germany return the skull of Chief Mkwawa, an East African leader who fiercely resisted German colonialism.
DQKrD TIL females are more likely than males to intervene when they are a bystander to sexual violence