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TIL that prior to the 1920s, up to 70% of children in parts of the United States had goiters due to iodine deficiency.

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groB7 TIL the first German woman with a Chemistry Ph.D. was married to Fritz Haber — a chemist known for supporting nearly half of the world's population's food supply through the synthesis of ammonia from the air and also for being the "father of chemical warfare." The latter would lead to her suicide.
voR TIL that Sylvia Plath’s husband burned her last journal upon her death, but agreed that her unpublished papers and journals may be released in 2013.
QNZak TIL Coal baron James Dunsmuir envisioned a medieval castle for his retirement and built Hatley Castle. It was like a small city on Vancouver Island with over 100 residents and servants in 1911. None of his children could afford the $1,500 monthly upkeep so it was sold at $260,000
eAJn TIL in 1779 US Captain John Paul Jones was engaged in battle with the royal Navy with a burning sinking ship he did not surrender and hours later jumped onto the British ship and took it over.
wBb1 TIL that a ‘second’ on a clock is called that way because it is the second division of an hour in 60 increments (the first being minutes)