Here are some highlights from Time’s 30 under 30 list from 2013:
As executive director of Girls Who Code, Kristen Titus heads up one of the most high-profile efforts to address gender imbalances in the tech world. The project aims to introduce teenage girls to computer science, a field that promises to be among the most significant job-growth industries in coming decades.
Need light? Look no farther than the palm of your hand—literally. Ann Makosinski’s “hollow flashlight,” her winning design from the 2013 Google Science Fair competition, is made from Peltier tiles that produce energy when one side is heated and the other side remains cool. Using only the warmth of her hands for energy, this Canadian teen’s flashlight is able to produce a steady beam of LED light for 20 minutes.
A former Goldman Sachs trader, Fred Ehrsam left Wall Street to co-found Coinbase, an online payment system with the stated mission of making bitcoin, an unregulated and increasingly popular form of digital currency, easy to use. The company, with roots in the Y Combinator startup incubator, now processes bitcoin payments for the likes of OkCupid and Reddit.