Prince Harry has stepped out for a secret solo engagement in New York City, just hours before receiving a prestigious award. The Duke and Duchess of Sussex are in the Big Apple for a series of engagements surrounding their mental health advocacy, with co-founders of the Archewell Foundation set to receive the Project Healthy Minds' Humanitarians of the Year Award tonight in recognition of their campaigns to make the online world a safer place for families and young people. Before their rare