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TIL Queen Elizabeth II, the longest serving British monarch, met Tu’i Malila the tortoise, the world’s oldest tortoise on record who lived to be 189.

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GXj1 TIL when Social Anxiety Disorder was added to the DSM-III in 1980, it was barely diagnosed, considered a rare disorder, until the late 90s when the drug ‘Paxil’ was approved for treatment. Now, 5.3 million Americans are diagnosed with it and is the 3rd most prevalent psychiatric disorder.
kQW5 TIL that there are more museums in the U.S. than there are Starbucks and McDonalds - combined
wLVkY TIL the largest living thing on earth is a humongous fungus
ADNWa The human brain looks like a big, pinkish-gray, wrinkly walnut. There are so many folds in it that, if it could be unfolded, it could be a small tablecloth. Pinkish-gray might not match your decor, but it would be about the right size! This "tablecloth" is made up of the cerebral cortex and is the wrinkly outside layer of your brain. All those folds are responsible for abstract thought, language, and memory. Scientists believe the wrinkles exist as a way to increase the surface area of the cortex, allowing for increased brainpower in a smaller space. In this week’s Today I Learned, neuroscientist and National Geographic Emerging Explorer Steve Ramirez shares some of his smarts on how your cortex is different from your pet hamster’s.
7KKL TIL there are potentially more tigers living in secret in the united states than in the wild