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TIL the mother of Australian spider species Diaea ergandros allows her babies to suckle blood from her leg joints until she has weakened and (usually) dies. This prevents early cannibalism between the spiderlings, thus resulting in more of the clutch surviving.

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xVKWb TIL that weeks before the end of World War II a group of Russian school children presented a wood replica of the Great Seal of the U.S. to the American ambassador. Hanged up in a study in the ambassador’s residence, it contained a listening device that went undiscovered for 7 years.
ojL8 TIL that in 1971, on the day before Bangladesh officially won its Liberation War, Pakistani soldiers kidnapped the brightest Bengali intellectuals–writers, philosophers, historians, mathematicians, physicists, poets–and slaughtered them in the middle of the night.
a8D0A TIL more than 1 in 10 Americans have no close friends. The share of Americans who have zero close friends has been steadily rising. From 3% of the population in 1991 to 12% in 2021. The share who have 10 or more close friends has also fallen - from 33% to 13%.
95v6 TIL The “polo” shirt was invented by a French tennis player named René Lacoste in 1926. It was designed to be worn with the collar upturned or ‘popped’ to protect your neck from the sun.
m1kAP TIL about Riley Horner, an Illinois teenager who was accidentally kicked in the head. As a result of the injury, her memory resets every two hours, and she wakes up thinking every day is June 11.