from BBC News - World https://ift.tt/2GqF6Wp
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The man teaching 300 million people a new language
Luis von Ahn is the founder and boss of Duolingo, the world's most popular language learning app.
from BBC News - World https://ift.tt/2GqF6Wp
via IFTTT
from BBC News - World https://ift.tt/2GqF6Wp
via IFTTT
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