It's hard to think of a time when I'm not working, but when that is the case, I like to travel and eat good food.

I am an early riser, and always wake up between 5 and 6am.

I co-founded Duolingo with the mission of bringing free language education to the world.

One fact we're particularly proud of is that there are more people learning languages on Duolingo in the US than there are people learning languages in the entire US public school system.

Because education is such a broad area, I chose to focus on language learning.

The question that motivates my research is, if we can put a man on the Moon with 100,000 [people], what can we do with 100 million?

The current business model for language education is the student pays — in particular, the student pays Rosetta Stone $500. The problem with this business model is that 95 percent of the world’s population doesn’t have $500.