British actress Emma Watson condemned child marriage during a visit to Malawi on Monday, calling on authorities across Africa to end the practice that can put young lives as risk as well as stopping girls get an education and a better future. Watson, 26, a goodwill ambassador for UN Women, was visiting the southeastern African nation a day ahead of the International Day of the Girl Child. In 2015, Malawi passed a law to raise the minimum age of marriage to 18 with UN Women working with traditional chiefs to change local practices.