Twit-t-who? The green owl who was the logo of language-learning app Duolingo is no longer. The US company behind the app, which became a household name during the Covid-19 pandemic, has issued an ...
Add Yahoo as a preferred source to see more of our stories on Google. The language-learning app boomed during the Covid-19 pandemic. - Gabby Jones/Bloomberg/Getty Images Twit-t-who? The green owl who ...
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