Tyler Caruso and Erik Facteau explain their scientific study of the value of urban farms, an effort to produce hard data that can challenge nay-sayers and inform policies and regulations that support agriculture in the city.

Landscape designer David Seiter champions the ecological and aesthetic benefits of informal plants – weeds – in urban space, and catalogues the uses and cultural significance of New York’s native flora.

David Briggs and Anthony Deen share the winning designs from the first of a series of competitions that address the challenges of developing contaminated urban areas.

Documentary filmmaker Ian Cheney talks to us about light pollution, the disappearance of the night sky and what we can do to reconnect our city to the stars.

A broad partnership dedicated to restoring oysters to New York Harbor is using science, policy and community engagement to improve the health of our waterways and stabilize our shorelines.

Dana Gumb explains how the City has engineered Staten Island’s wetlands and waterways to enhance their natural ability to convey, store and filter stormwater.

Urban designer Kaja Kühl illustrates how to use plants to clean up contaminated sites, a cost-effective way to add productive, healthy land to the City’s environment.