Membranes - porous biological interfaces which regulate flows between one zone and another - are the foundational image for an issue guest-edited by Granta contributor and best-selling novelist Rana Dasgupta.
Featuring new poetry from Andrew McMillan and Tishani Doshi, photography from Ruchir Joshi, Arturo Soto Gutierrez, Monica de la Torre and Anita Khemka, as well as cutting-edge fiction and thought-provoking essays: Fatin Abbas on the border between Sudan and South Sudan