Cities debate
Discussions featuring diverse voices from around the world, comparing the issues that affect them most urgently
Cities debate: teenagers talk London, New York, Johannesburg and Rio
'Children are a kind of indicator species. If we can build a successful city for children, we will have a successful city for all people,' says Enrique Peñalosa, former mayor of Bogotá, credited with transforming his city. The Guardian talks to young people around the world about how they rate their home cities
