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TIL British Tanks are all built with a kettle inside, to make tea anytime, anywhere

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OEo6 TIL that China invented fireworks, but Italy gave them color. Colors are created using metallic powders. Calcium makes orange, sodium makes yellow, and barium makes green. Also, cylindrical tubes create whistling sounds, aluminum flakes make hissing noises, and flash powder makes the loud “booms.”
j6Rbj TIL That the US Government invented the internet. The internet got its start in the United States more than 50 years ago as a government weapon in the Cold War. For years, scientists and researchers used it to communicate and share data with one another
x65dk TIL estrogen is responsible for the "masculinization" of male brains in early development. Newborn female mice exposed to estrogen will even go on to exhibit male behavior, such as mounting other female mice. Estrogen also plays important roles in memory, stroke prevention, and overall brain health.
Oom54 TIL Robert Downey Jr, after Iron Man 3, said he'd only do Iron Man 4 if Mel Gibson directs it
wLyQP TIL: COVID-19 (Coronavirus Disease 19) is the disease, and is caused by a virus called SARS-CoV-2