Duolingo. {Ten interesting factual snippets}

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Lovely ten things about Duolingo

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Doulingo has over 120 million students!
Just over 3/4 of of Duolingo's students are taking the English to Spanish course!
Doulingo has 60 employees!
The ratio of employees to students is 1 to 2,000,000!
Doulingo is written in a language that is not being taught in its own websites!
Duolingo was created by two people: Luis Von Ahn and Severin Hacker!
The website was launched on November, 30 2011!
Doulingo has its own headquarters in Pittsburg, Pennsylvania, USA!
As of today (February 9, 2017), there are 21 language courses available for English speakers!
In 2013, Apple chose Doulingo as its iPhone App of the Year, the first time this honor had been awarded to an educational application!