Encouraging New Yorkers to probe the mysteries of the material beneath their feet, the Urban Soils Institute is moving knowledge of urban soils outside the domain of science and into the hands of communities.

Density and displacement aren’t just problems for the living.

From deadly explosions to silent climate warming emissions, the contemporary troubles of the city's gas infrastructure have roots in the tumult surrounding its installation more than a century ago.

Leah Meisterlin and Gergely Baics demonstrate how mining data embedded in historical maps is opening new seams in experimental urban research.

Marie Warsh draws on recent archaeological discoveries to revisit the history of the northern end of Central Park. Touching on geology and topography, 19th century military strategy, and new readings of documentation of Central Park's creation, she reveals a more densely layered cultural landscape than is commonly understood.

Archaeologist Alyssa Loorya takes on the supposed tension between preservation and development, shares the particularities of urban archaeology, and tells the fascinating stories of some of her favorite sites and finds.

Henry Grabar joins subway historian Joseph Raskin on a tour of the G train, charting a history of proactive investment in infrastructure through the vestiges of uncompleted projects along its route.

Phantom Projects share aspect of unreality; not only were they visionary at the time they were introduced, but also unattainable.