With half the world’s population now living in just 1% of the land area, urban poverty is a growing problem. We head to a gathering of leading global thinkers at the Rockefeller Foundation Bellagio Centre, to explore practical and innovative ways to tackle the issue. Quentin Cooper is joined by population expert Purnima Mane, anthropologist professor Francis Nyamnjoh, former president of a chain of ethical grocery stores Doug Rauch, and food and water policy expert Paula Daniels.

(Photo: Comuna 13 Shantytown Colombia. Credit: Raul Arboleda/AFP/Getty Images)