› added 8 years ago

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TIL the use of sunscreen can cause coral bleaching; the main component of sunscreen, titanium dioxide, forms hydrogen peroxide, OH- and superoxides (O2-) in water, all of which contribute to coral bleaching. 10% of bleached coral is estimated to have been caused by sunscreen alone.

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RZW1 TIL microscopic algae, not trees, produce the majority of the oxygen we breathe.
9RbB TIL of the Horseshoe Theory. The idea is that the political spectrum isn’t a line, it’s more of a horseshoe shape. The extreme ends of the left and right are more similar to each other than moderate left and moderate right.
E1RKp TIL that the Mercantile Library of Cincinnati has a perpetually renewable 10,000-year lease from the Cincinnati College, after members of the Library Association helped rebuild the college when its structure burned in 1845
AVx TIL a boy was conscripted into the Khmer Rouge at age 10 and layed thousands of landmines, but as an adult started clearing them with a stick and a Leatherman. His collection of defused bombs became the Cambodia Landmine Museum, which is also an orphanage for victims.
rRQZd TIL, in 1976, the United States House Select Committee on Assassinations determined the JFK and MLK assassinations were likely the result of conspiracies.