Roberta Brandes Gratz, American journalist, writer and urban critic, discusses Jane Jacobs' ideas in the book "Dark Ages Ahead", as well as Jane's ideas about urban development in relation to recent trends in urban development around the world.

This talk was given at the Closing of Jane Jacobs' Centennial Year at the Faculty of Architectire and the Built Environment of the Delft University of Technology (TU Delft).