This is what democracy looks like: not only public squares, but office buildings. In the Lower East Side, the Peace Pentagon was the source point for four decades of resistance.

Residents recall a decade of upheaval in the East New York Oral History Project.

Seed libraries can restart agriculture after disasters. But what of useless plants? Two artists save the spontaneous, weedy species that serve no purpose but their own.

For Shelf Life, a film made in 1964 provides an enduring lens through which to look at density's delights.

In the first installment of Shelf Life, Janet Parks, curator of the Avery Drawings and Archives at Columbia University, takes us through its architectural underworld, uncovering the collection's treasures.

A city needs memory like it needs streets, trees, and people. But how do we build an infrastructure to contain and deliver the city's history? Ben Vershbow, former director of NYPL Labs, talks with Shannon Mattern about libraries as stewards of the past in the age of Google Maps.

The New York Public Library’s geospatial librarian Matt Knutzen discusses his stewardship of half a million maps and 20,000 atlases and the contemporary applications of this vast, historical collection.

Gabrielle Bendiner-Viani tells the story behind an innovative memorial to a century-old tragedy with an evolving and enduring legacy for labor rights, building codes and the challenges of commemoration.