Nigeria’s President Muhammadu Buhari has unveiled what one of his media aides has dubbed the “world’s largest rice pyramids” – made with one million bags of rice – in the capital, Abuja. The temporary “pyramids” are aimed at showcasing the government’s efforts to boost rice production, and to make Nigeria – Africa most populous state – self-sufficient in food. It was one of the main electoral pledges that Mr Buhari made when he took office in 2015. The bags of rice for the pyramids were collected from farmers across Nigeria, whose efforts to increase production received financial backing from the central bank in a scheme known as the Anchor Borrowers’ Programme.