Juliette Spertus discusses her exhibit - which combines infrastructure, New York history and alternative urban futures - about Roosevelt Island's trash collection system.

Sociologist Dalton Conley takes us on a walk through the public housing complexes where he grew up, reflecting on the economics of housing policy and the limits of design.

David Leven and Derek Porter discuss how their architecture and lighting design students collaborated to reimagine access to and use of this complex waterfront site.

As cities demand more efficient transit systems, Steven Dale argues for thinking off the road and outside the subway, and thinks that Cable-Propelled Transit could be our answer.

Jeff Maki explains Manhattan's District Steam Service as a case study in how citizens can engage in the maintenance of infrastructure.

A nocturnal urban hunt, an aural field trip through New York City, listening for the sounds of sirens and what they signify.

Deborah Grossberg Katz and Terri Chiao explore how small-scale design can address broader social issues through their research on the systemic cycle of homelessness in the city.

Diana Balmori shares a flexible and inexpensive design scheme - complete with public engagement a la Twitter - to create street furniture and plantings that reimagine the public space of Gansevoort Plaza.

Designers reflect on how their work explores implications of ubiquitous computing for architecture and urban space.

Communication designer Sidney Blank shares the story behind STACKD, a new social networking site that helps people in Manhattan office buildings get in touch – for business or beers.