Biologist and plant scientist Paul Mankiewicz explains the Gaia Hypothesis, the inherent environmental productivity of organisms, and why the city's waste stream is our greatest untapped ecological and economic asset.

Amanda Schachter and Alexander Levi, of SLO Architecture, discuss the power of long-term community engagement, their proposal for an abandoned train station, and the potential of a long neglected river to connect the Bronx and the entire city.

Tim Maly takes us on a tour of New York City's landscapes of dredge, and explores how the city's past, present and future are shaped by technologies and processes of what he calls "the greatest unrecognized landscape architecture project in the world."

Caitlin Blanchfield looks at how a historic shipbuilding facility is fostering a new culture of industry in New York, one informed by a sophisticated understanding of local dynamics, regional economics, and global challenges.

Steve Duncan — historian, photographer and explorer — reflects on wastewater infrastructure, underground rivers, and the thrills and urban lessons he's discovered beneath the surface of cities.

Kerri Culhane explains how geographical, historical and architectural factors make the Two Bridges neighborhood uniquely suited to realize the environmental, economic and social benefits of green infrastructure.

Two new elegant waterfront firehouses prompt a closer look at the Fire Department's Marine Operations unit, its unique architectural needs, cultural significance and essential function as part of the complex system of services that keeps the city safe.

Adam Lubinsky discusses a range of urban planning strategies and design opportunities to help get New Yorkers into the waters of the East River.