King Charles has stepped out for a rare joint appearance with Prince William as he made a major announcement. Father and son attended a reception at the Natural History Museum in London to mark six weeks to go until world leaders gather in Belém, Brazil, for the COP30 climate change summit. And at the event tonight, it was revealed that William will be attending the summit next month on behalf of his father. William is already travelling to Brazil for the Earthshot Prize Awards ceremony taking