Pittsburgh-based Duolingo announced several upgrades Tuesday to its popular learning app. The intrigue: Duolingo has moved beyond just language learning over the years — adding math, music and chess — ...

I’m embarrassed to admit this in my mid-forties, but I’ve never understood chess well enough to play a full game. My son and daughter both learned how to play in elementary school. I was glad they had ...

Anyone who’s taken language lessons on the Duolingo app is certainly familiar with the Duolingo owl, Duo. If you skip out on lessons, Duo will ping you — crying! — to come back. Over the past few ...