Climate crisis

The climate crisis demands action — and action is happening. This archive tracks real progress: policy wins, clean-energy milestones, community resilience, and scientific advances that show meaningful change is possible. Stories here come from every corner of the world.

Rolls-Royce & easyJet hydrogen engine, for article on hydrogen jet engine

World’s first test run of a hydrogen jet engine proves a success

Hydrogen-powered flight moved from theory to reality when Rolls-Royce and easyJet successfully ran a modern jet engine on green hydrogen produced entirely from wind and tidal energy. Unlike battery-electric approaches, hydrogen burns clean — releasing water vapor instead of carbon dioxide — and this test proved a real engine can handle it. Aviation has been one of the hardest sectors to decarbonize, so a confirmed proof of concept opens a genuine path forward. Every major breakthrough in flight history started exactly here: on the ground, with an engine, and a question that finally got answered.