Prince William took a bus ride through London on Tuesday to showcase advancements tied to his annual Earthshot Prize initiative. Accompanied by environmental advocate Robert Irwin, son of the late Australian zookeeper Steve Irwin, and a group of young campaigners, William boarded a specially designated electric double-decker bus on route 2030.

The journey concluded at Guildhall, where the Earthshot Prize Impact Assembly was held as part of London Climate Action Week. The event spotlights significant progress in addressing the global environmental crisis by promoting innovative solutions.

Transport for London (TfL) has introduced 3,000 of the zero-emission buses as part of a broader strategy to convert its entire fleet to zero emissions by 2030. The initiative aligns with the overall goals of the Earthshot Prize, which aims to accelerate sustainable solutions worldwide.

In a speech at the assembly, the 44-year-old royal emphasized the importance of tangible results in the fight against climate change. “We have more than belief. We now have proof. Solutions are working. Our finalists are calling. Progress is starting to build on itself,” William said. He expressed optimism rooted not in a diminished scale of the climate challenge or less urgent scientific findings but in the growing evidence of effective interventions.

Since its inception, the Earthshot Prize has supported 75 finalists globally, awarding a total of £25 million in funding to projects that demonstrate scalable impact on environmental issues. The prize seeks to identify, promote, and accelerate breakthroughs across areas including climate, nature, and sustainable development.

The event and the bus journey underscore Prince William’s commitment to championing environmental innovation and underscore growing municipal efforts to reduce carbon footprints through sustainable urban transport.