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TIL that grass makes you itch because thin nature of a blade of grass can cause microscopic scratches in your skin. When you sweat which contains salt touches tiny scratches and you itch.

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VMXg8 TIL that the first woman elected to the US Congress was the only person to vote against the declaration of war against Japan on December 8, 1941
jmkv TIL that in the Victorian era, people used rocking bathtubs–literally, tubs of water that could be sloshed back and forth–to recreate the feel of the ocean in their homes
8nyG TIL that Comedian Eddie Izzard Completed 27 Marathons in 27 Days
E1Yod TIL Anne Frank has a tampon named after her in Japan, and because the enthusiasm she displayed in her diary about getting her first period shattered a cultural taboo, the Japanese refer to a woman's first day of menstruation as “Anne’s Day”.
WDpY TIL Heteropaternal superfecundation is a rare medical scenario whereby twins can be born of two separate biological fathers