This green roof and farm offer a Swiss army knife of solutions — flood control, solar energy, fresh produce, green space for city dwellers, jobs, learning opportunities, and more — to some of our most pressing urban problems. Landscape architect Kotchakorn Voraakhom tells us how it works.
A selection of uplifting reads — all suggested by TED speakers — for your end-of-year break.
Victor Gruen was an avant-garde European socialist who inadvertently designed that all-American creature, the mall. But, as Steven Johnson reveals, his master plan was way grander — and one we might want to build today