Tokyo Olympic flame is the first powered by hydrogen
https://apnews.com/bbf8384d1f10d37b89daec66b1df48b5
TOKYO (AP) — Inspired by the sun, the Tokyo Olympic cauldron is designed to be better for the planet.
The flame at Tokyo’s National Stadium and another cauldron burning along the waterfront near Tokyo Bay throughout the games will be sustained in part by hydrogen, the first time the fuel source will be used to power an Olympic fire.