How being colourblind turned Prof Loyiso Nongxa into a mathematician

Prof Loyiso Nongxa is a trailblazer and an inspiration to many. In 1978, the mathematician became the first black South African to receive a prestigious Rhodes scholarship (now known as the Mandela Rhodes Scholarship) to study at Oxford University. The former Wits vice-chancellor was last year voted in as one of the vice-presidents of the International Mathematics Union.