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TIL Texas didn’t have safety regulations on natural gas until after a school blew up and killed hundreds of children. Nobody was held accountable, but they passed strict regulations afterwards. It was so bad that even Hitler sent a letter of condolence.

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ADVBw TIL scientists give funny names to genetically variant fruit flies; (Ken & Barbie): flies that fail to develop external genitalia, (Maggie): Flies that fail to develop past a certain stage & are named after Maggie from the Simpsons, (Cheap Date): A fly that expresses high sensitivity to alcohol.
78bYP TIL in 1530, the chinese Ming Dynasty invented bronze-iron composite cannons. The Dutch claimed "it’s scarcely possible to find their equal outside of Ming Empire". After manchu Qing dynasty's conquest they deprioritised Gunsmithing and had to use 100-300 years old cannons against British Empire.
rNAaw TIL the state of Texas keeps a database of over 500 executed inmate's last words going back to the 1980's
WjYL TIL: The air in Beijing is so polluted that breathing it does as much damage to the lungs as smoking 40 cigarettes a day.
VB1o0 TIL in 2020 scientists discovered a new organ in the human throat, a previously unknown pair of salivary glands called the "tubarial salivary glands".