Prince William visits Greentown Labs in Somerville. Reuters
The Prince and Princess of Wales arrive at Boston Logan International Airport, AP
The royal couple are greeted by Lt Governor Karyn Polito, centre, Massachusetts Governor Charlie Baker, back, and first lady Lauren Baker, back left, as they arrive at Boston Logan International Airport. AP
The Prince and Princess of Wales arrived in Boston on a rainy day before the Earthshot awards. AFP
Ms Wu and her family chat with the British royal couple. AFP
The Prince and Princess of Wales are shown photos of Queen Elizabeth II's visit to Boston in 1976. AP
The royal couple join governor-elect Maura Healey, centre, and Ms Wu, right, in pushing a green button to illuminate buildings in Boston with green light. AP
The royal couple speak with Ms Healey during a welcoming event at City Hall Plaza in Boston. EPA
Massachusetts governor-elect Maura Healey looks on as Britain's Prince William is handed a basketball by his wife Kate at a Boston Celtics game. AP
Prince William, centre, and wife Kate, right, are greeted by Boston Celtics forward Jayson Tatum before the start of the Celtics-Heat NBA game in Boston, Massachusetts. EPA
The Prince and Princess of Wales look on as Malcolm Brogdon of the Boston Celtics shoots the ball during the game. AP
Prince William, Kate and Emilia Fazzalari, wife of Boston Celtics majority owner Wyc Grousbeck at the Boston Celtics game. AP
The Prince and Princess of Wales discuss the players' skills at the Boston Celtics game. EPA
Fans take pictures of Prince William during halftime. EPA
The royal couple sit with Ms Wu, left, and Ms Healy, second left. EPA
Ms Wu, Ms Healey and the Prince and Princess of Wales watch the game. AP
Fans take photographs with the royal couple during the game. AP
Former Boston Celtics player Satch Sanders speaks with Prince William. AP
The Prince and Princess of Wales speak with teenage climate activist Ollie Perrault. EPA
Prince William visits Greentown Labs in Somerville. Reuters
The Prince and Princess of Wales arrive at Boston Logan International Airport, AP
The royal couple are greeted by Lt Governor Karyn Polito, centre, Massachusetts Governor Charlie Baker, back, and first lady Lauren Baker, back left, as they arrive at Boston Logan International Airport. AP
The Prince and Princess of Wales arrived in Boston on a rainy day before the Earthshot awards. AFP
Ms Wu and her family chat with the British royal couple. AFP
The Prince and Princess of Wales are shown photos of Queen Elizabeth II's visit to Boston in 1976. AP
The royal couple join governor-elect Maura Healey, centre, and Ms Wu, right, in pushing a green button to illuminate buildings in Boston with green light. AP
The royal couple speak with Ms Healey during a welcoming event at City Hall Plaza in Boston. EPA
Massachusetts governor-elect Maura Healey looks on as Britain's Prince William is handed a basketball by his wife Kate at a Boston Celtics game. AP
Prince William, centre, and wife Kate, right, are greeted by Boston Celtics forward Jayson Tatum before the start of the Celtics-Heat NBA game in Boston, Massachusetts. EPA
The Prince and Princess of Wales look on as Malcolm Brogdon of the Boston Celtics shoots the ball during the game. AP
Prince William, Kate and Emilia Fazzalari, wife of Boston Celtics majority owner Wyc Grousbeck at the Boston Celtics game. AP
The Prince and Princess of Wales discuss the players' skills at the Boston Celtics game. EPA
Fans take pictures of Prince William during halftime. EPA
The royal couple sit with Ms Wu, left, and Ms Healy, second left. EPA
Ms Wu, Ms Healey and the Prince and Princess of Wales watch the game. AP
Fans take photographs with the royal couple during the game. AP
Former Boston Celtics player Satch Sanders speaks with Prince William. AP
The Prince and Princess of Wales speak with teenage climate activist Ollie Perrault. EPA
Prince William visits Greentown Labs in Somerville. Reuters
