epa10342226 Britain's Catherine, Princess of Wales speaks with startup companies that work at Greentown Labs as the British royals tour the location for a view of green technologies developed in Somerville, Massachusetts, USA, 01 December 2022. The Prince and Princess of Wales will attend the Earthshot Prize Awards Ceremony in Boston on 02 December, according to the Royal Household. EPA-EFE/ANGELA WEISS / POOL