Luis von Ahn is the founder and boss of Duolingo, the world's most popular language learning app.
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Russia ignores Ukraine's unilateral ceasefire and attacks kindergarten
Ukraine's president says Russia has "spurned the ceasefire" and Kyiv is deciding on further action to take. from BBC News ht...
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The EU's anti-fraud office confirms it has "sufficient information" to launch an investigation, but does not say if it involve...
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How the blaze took hold with such ferocity, killing at least 40 people and leaving many more critically injured, is now a key focus for offi...
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Beatles star reveals all about his new country album, being a Sir and coming up with the phrase A Hard Day's Night. from BBC News http...
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