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TIL 4 of the 5 richest counties are all in Northern Virginia and the 5th is right across the bridge in Maryland.

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KODew TIL of Thor Heyerdahl, the Norwegian adventurer and scientist, who became notable for his Kon-Tiki expedition in 1947, in which he sailed 8,000 km (5,000 mi) across the Pacific Ocean in a hand-built raft from South America to the Tuamotu Islands to prove the Ancients could've accomplished this too.
8e708 TIL that the 'franca' in "lingua franca" isn't a reference to French but instead to 'the Franks', or western Europeans. The term comes from from a pidgin language used in the eastern Mediterranean, comprised of words from Italian, Occitan, Greek, Turkish, Arabic, and Slavic
69Wkm TIL that cartoon depictions of the sawfish having a sharp cutting snout are more reality than fantasy. While myths about cutting ship hulls are untrue, bad injuries result for boat crews. If caught the animal intentionally tries to cut humans. (More cool bio stuff sprinkled through rest of article.)
RGg9 TIL a woman was diagnosed HIV+, despite her husband and exes all testing HIV-. Convinced her spouse(a doctor) infected her via a “vitamin shot”, she had detectives examine his clinic’s records. 1 HIV+ blood sample was missing. That patient’s HIV strain was ~identical to hers, convicting the husband.
4koao TIL almost 75 percent of the refrigeration and air conditioning sector can be converted to natural refrigerants, such as ammonia