The Duolingo icon, Duo, is sick. It doesn't look like Tylenol or NyQuil can make Duo feel better. The only way Duo can heal is if you complete your lesson. As long as you leave Duo hanging, he's going ...

I’ve always wanted to be fluent in multiple languages, but at 28 years old with just English under my belt, I think I’m falling behind on my polyglot dream. It’s partly my fault — I studied French in ...