Prince Harry has opened up on his fears for Prince Archie and Princess Lilibet as they grow up. The Duke of Sussex shared how his children, Archie, five, and Lilibet, three, gave him a greater desire to change the world. During an event celebrating the fifth anniversary of his not-for-profit organisation Travalyst on September 24, the Duke of Sussex spoke about sustainable travel. He also explained how parenthood heightened his concern for environmental issues. In a speech, Prince Harry said: “Somebody born in 2020 is likely to experience eight times the number of heatwaves, four times the num…