King Charles of Britain made his first public appearance since announcing his cancer diagnosis last week. He attended church with his wife, Camilla, in Sandringham, England. The 75-year-old king, who has been on the throne for less than 18 months, expressed gratitude to well-wishers following his diagnosis. While undergoing treatment, he has postponed some public engagements but plans to continue with his private work as monarch. The palace has not provided further details about the unspecified form of cancer Charles has been diagnosed with.