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TIL 50 to 85 percent of oxygen on Earth comes from the ocean, mainly from phytoplankton.

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xVAn7 TIL That there were elephant-sized sloths that lived on the ground as recently as 1500 BC in the islands of the Caribbean, meaning that they lived alongside humans
6ELnJ TIL Qajartalik (Inuktitut for "where there is a kayak") is a petroglyph site located on Qikertaaluk Island, Nunavut, with over 150 carvings of faces in soapstone. It is believed to be the north most rock art site in North America
ZpMmB TIL of Army Spc. Alyssa Peterson who died after shortly after refusing to participate in torture of prisoners of war. Her death was ruled a suicide.
8eKmG TIL of Martha Stewart, who was sentenced to 5 months in prison over a $46K "insider" trade
1MXP TIL that the company that produces Sriracha hot sauce made $60 million in the year 2012 alone, while not spending one penny at all on advertising.