› added 5 years ago

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TIL that phytophotodermatitis is a UV activated blistering condition that can be caused by common plants like fig trees, celery and lime trees!

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VBmk4 TIL that in the US, "Since 1996, 68 [American] football players have died from exertional heat stroke (50 high school, 13 college, 2 professional, 2 organized youth, and 1 middle school)."
XEAVR TIL Lake Superior's Isle Royale has a lake (Siskiwit) which also has an island (Ryan) which has a seasonal pond (Moose Flats) which contains Moose Boulder making it the largest island in the largest lake on the largest island in the largest lake on the largest island in the largest lake in the world
yVlQl TIL the @ symbol was invented in 1536. 435 years before email.
yQgGX TIL that a dental worker once injected herself with mercury and survived
oBAn7 TIL that According to a 1956 circular, it is forbidden to give written homework to primary school pupils in France. Children are supposed to do their homework in class and not at home. However, it is still possible to ask them to learn a lesson, read or do research. (Not applied in practice)