The chain’s latest online shenanigans prove that everything—even a Halloween-themed doughnut—can become a meme.

Today, I’m talking with Luis von Ahn, the cofounder and CEO of Duolingo, the popular app that teaches languages. It’s an interesting time to be in the language business: if there’s anything ...

Cops clearing out a homeless camp in Seattle made a grizzly discovery: the body of a missing woman who may have been murdered before being stuffed in a suitcase. Shannon Reeder, 37, a mother who ...

I am downgrading Duolingo to a “sell” as I believe its valuation is stretched, along with headwinds from macroeconomic uncertainty, muted revenue guidance, and tougher comps. While investors ...

Duolingo, the popular language-learning app, has built an impressive base of loyal users, with 34 million people using it every day. Its unique approach, which gamifies the process of learning a ...

“What did you put in the ricotta?” Ann Maloney asked me. We were at a holiday party for the Food team at my house, and Ann — The Washington Post’s recipes editor at the time — was raving ...

Animals, much like humans and plants, are vital to our ecosystem. They contribute in numerous ways that are integral to maintaining ecological balance. From regulating ecological processes such as ...

Perhaps no app has mastered user loyalty quite like Duolingo, the gamified language-learning platform 34 million people a day can't put down. Here, CEO and co-founder Luis von Ahn tells the BBC ...