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TIL that cost for solar has decreased from $101.05 per watt in 1975 to $0.447 per watt in August of 2016. The cheapest bid for unsubsidized solar is 2.42¢/kWh—cheaper per kWh than natural gas, coal, or nuclear power can provide practically anywhere in the world.

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vPedj TIL that the British colonizers set about defining 2,378 castes belonging to 43 “races,” by measuring the noses. They called it the "nasal index"
ynya TIL that Zdeno Chára, the 6’ 9" tall captain of the Boston Bruins, speaks seven different languages, has a financial planning diploma from Algonquin College, and holds a license allowing him to sell real estate in the State of Massachusetts.
6A0l TIL that the term “debugging” actually originated, and was popularized by Grace Hopper when her associates discovered and removed an actual moth that was stuck inside a relay of the Harvard Mark II, impeding its performance.
x6eQk TIL There are only two remaining Northern white rhinoceros alive today, both are female and in captivity, causing this subspecies to be functionally extinct
lxJA TIL Kevin Smith once joined a group of protesters in demonstrating against his own movie Dogma.