Prince William capped a three-day visit to Boston by attending the star-studded Earthshot Prize gala and meeting with President Joe Biden. The Prince of Wales paid homage to the late President John F. Kennedy, saying his Earthshot Prize was inspired by Kennedy's audacious moonshot speech in 1962 that mobilized the nation to put astronauts on the moon. That same sense of urgency and scale is needed now to protect the environment, William said. Before the event, William met privately for 30 minutes with Biden after the two shook hands and spoke briefly in the cold near the water outside of the John F. Kennedy Memorial Library and Museum. William also met Caroline Kennedy, the ambassador to Australia and the late president's daughter. William toured the museum with Kennedy and told her that her father was "the man who inspired our mission." Swipe to see scenes from Prince William's visit to the U.S. 📸 @gettyimages @apnews @afpphoto #princewilliam #royals #biden #katemiddleton