Celebrities joined Prince William in London on Sunday for the inaugural awards ceremony of his Earthshot Prize, an ambitious environmental program that aims to find new ideas and technologies around the world to tackle climate change and Earth’s most pressing challenges.
The winners announced Sunday included the government of Costa Rica, which was honored for a project that pays local citizens to restore natural ecosystems, and the city of Milan, which was handed a prize for its Food Waste Hubs program, which recovers food from supermarkets and restaurants and distributes it to those in need.
Actors Emma Thompson, Emma Watson and David Oyelowo joined William and Kate, the Duchess of Cambridge, in handing out the awards at Alexandra Palace in north London.
Guests were asked to “consider the environment when choosing their outfit,” and Watson arrived wearing a gown made from 10 wedding dresses from the charity Oxfam. Kate wore an Alexander McQueen dress made for her in 2011, while her husband wore a dark green velvet blazer and a polo neck.
William and his charity, The Royal Foundation, launched the Earthshot Prize last year, inspired by President John F. Kennedy’s 1962 “Moonshot” speech that challenged and inspired Americans to go to the moon.
The prize, to be awarded to five winners every year until 2030, is billed as the most prestigious of its kind. Each winner will receive a grant worth 1 million pounds ($1.4 million) to develop and scale up their ideas.