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Today I learned A cat's purr might also mean they are in pain

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r6ne TIL Russians gave one of the puppies of the space dog, Strelka to JFK’s daughter Caroline.
PYooV TIL of Diana Trujillo - who despite being a 17 year old immigrant arriving to America with no English skills and only $300 dollars in her pocket - was able to work her way from housekeeper to becoming an aerospace engineer at NASA who helped create the robotic arm for Mars rover Perseverance.
p8Dme TIL: NDMA (N-Nitrosodimethylamine) is a cancer causing ingredient put into a lot of products which show up on the USA's FDA recall list. Everything from medication to supplements and water have been found to contain NDMA, most recently listed Metformin Hydrochloride, Anti-diabetic medication.
dmbQ TIL By law, buildings in Washington, D.C cannot be taller than 130 feet. Lawmakers were worried that the Washington Monument wouldn’t be visible if skyscrapers were constructed.
neRGG TIL Middle aged men with resting heart rates of 80 beats or higher per minute are likely to die four to five years earlier than men with resting heart rates of 65 beats per minute or less.