The Download: Ukraine’s drone defenses, and today’s climate heroes

Drones have come to define the brutal conflict in Ukraine that has now dragged on for more than two and a half years. And most rely on radio communications—a technology that Serhii “Flash” Beskrestnov has obsessed over since childhood.

While Flash is now a civilian, the former officer has still taken it upon himself to inform his country’s defense in all matters related to radio. Once a month, he studies the skies for Russian radio transmissions and tries to learn about the problems facing troops in the fields and in the trenches.

In this race for survival—as each side constantly tries to best the other, only to start all over again when the other inevitably catches up—Ukrainian soldiers need to develop creative solutions, and fast. As Ukraine’s wartime radio guru, Flash may just be one of their best hopes for doing that. Read the full story.

—Charlie Metcalfe

Meet 2024’s climate innovators under 35

One way to know where a field is going? Take a look at what the sharpest new innovators are working on.

Good news for all of us: MIT Technology Review’s list of 35 Innovators Under 35 just dropped. A decent number of the people who made the list are working in fields that touch climate and energy in one way or another. And our senior climate reporter Casey Crownhart noticed a few trends that might provide some hints about the future. Read the full story.

This year’s list is available exclusively to MIT Technology Review subscribers. If you’re not a subscriber already, you sign up here with a 25% discount on the usual price.