LONDON, UNITED KINGDOM - OCTOBER 17: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge attends the Earthshot Prize 2021 at Alexandra Palace on October 17, 2021 in London, England. The Earthshot Prize, created by Prince William, Duke of Cambridge and The Royal Foundation, is an environmental prize awarded to the most inspiring and innovative solutions to environmental challenges facing the planet. (Photo by Max Mumby/Indigo/Getty Images)