Here’s how we picked this year’s Innovators Under 35

We’ll also soon reveal our 2025 Innovator of the Year, whose technical prowess is helping physicians diagnose and treat critically ill patients more quickly. What’s more (here’s your final hint), our winner even set a world record as a result of this work.

MIT Technology Review first published a list of Innovators Under 35 in 1999. It’s a grand tradition for us, and we often follow the work of various featured innovators for years, even decades, after they appear on the list. So before the big announcement, I want to take a moment to explain how we select the people we recognize each year.

Step 1: Call for nominations

Our process begins with a call for nominations, which typically goes out in the final months of the previous year and is open to anyone, anywhere in the world. We encourage people to nominate themselves, which takes just a few minutes. This method helps us discover people doing important work that we might not otherwise encounter.

This year we had 420 nominations. Two-thirds of our candidates were put forward by someone else and one-third nominated themselves. We received nominations for people located in about 40 countries. Nearly 70% were based in the United States, with the UK, Switzerland, China, and the United Arab Emirates, respectively, having the next-highest concentrations.

After nominations close, a few editors then spend several weeks reviewing the nominees and selecting semifinalists. During this phase, we look for people who have developed practical solutions to societal issues or made important scientific advances that could translate into new technologies. Their work should have the potential for broad impact—it can’t be niche or incremental. And what’s unique about their approach must be clear.

Step 2: Semifinalist applications

This year, we winnowed our initial list of hundreds of nominees to 108 semifinalists. Then we asked those entrants for more information to help us get to know them better and evaluate their work.

We request three letters of reference and a résumé from each semifinalist, and we ask all of them to answer a few short questions about their work. We also give them the option to share a video or pass along relevant journal articles or other links to help us learn more about what they do.

Step 3: Expert judges weigh in

Next, we bring in dozens of experts to vet the semifinalists. This year, 38 judges evaluated and scored the applications. We match the contenders with judges who work in similar fields whenever possible. At least two judges review each entrant, though most are seen by three.