America was winning the race to find Martian life. Then China jumped in.

February 26, 2026
To most people, rocks are just rocks. To geologists, they are much, much more: crystal-filled time capsules with the power to reveal the state of the planet at the very moment they were forged.  For decades, NASA had been on a time capsule hunt like none other—one across Mars. Its rovers have journeyed around a…

Roundtables: Why 2026 Is the Year for Sodium-Ion Batteries

February 25, 2026
Listen to the session or watch below Sodium-based batteries could be a cheaper, safer alternative to lithium-ion, and the technology is finally making its way into cars—and energy storage arrays on the grid. Sodium-ion batteries are one of MIT Technology Review’s 10 Breakthrough Technologies of 2026 list, and this subscriber-only discussion explains why. Watch a…