Duolingo has officially brought an end to its cryptic PR stunt, one that saw its mascot, the raging green owl, pronounced ...

It’s a bird, it’s a plane—no, it’s Duolingo’s green owl making the most dramatic comeback since, well, the Undertaker.

Two weeks after Duo the Owl's demise, Duolingo's language learning app's mascot admitted that "faking my death was a test." ...