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?

Every time you buy tickets on Ticketmaster, you help to digitize a book.

In 2011, after spending a couple of years working at Google, I decided that I wanted to dedicate myself to helping to transform education. I was particularly inspired by my upbringing in Guatemala, a poor country where high-quality educational opportunities are limited to those who have money.

I worked on a number of projects that were used by millions of people and that also served as inspiration to what we now call "crowd-sourcing."

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

This sounds strange to many people, but I work out for exactly 16 minutes every day, and do so at maximum speed by running 2.5 miles. This keeps me healthy without taking up too much time so I can stay focused on other things. It's one of the most efficient things I do each day.

[Captchas] are not only annoying, but they kill 10 seconds of your time.