Prince William, Kate attend Earthshot Prize awards ceremony

The annual awards were created by Prince William to fund projects that aim to save the planet.

Five winners will receive 1 million pounds ($1.12 million) each to develop solutions to major environmental problems.

There were 15 finalists across five categories ranging from a Kenyan startup that makes cleaner-burning stoves to a city-wide recycling initiative in Amsterdam. The prize received more than 1,000 nominations.

William, who became heir to the British throne after Queen Elizabeth died in September, set up the prize in 2020, named in reference to former U.S. President John F. Kennedy's ambitious "moonshot" project and his goal for the 1969 moon landings.

Other prize finalists include an Omani initiative to remove carbon dioxide by turning it into rock, an Indian business making a sustainable alternative to leather from used flowers, and a Chinese team trying to turn barren desert into fertile soil.