In the financial crisis of the 1970s, large sections of New York City were abandoned by landlords and city officials. Residents revitalized their neighborhoods, reclaiming them from decay by turning vacant lots into community gardens. More than 800 gardens tipped neighborhoods away from crime, toward community action, better diets and cleaner environments. The gardens trained a generation of activists and spawned other environmental projects, in New York and overseas.
From the EcoTipping Points Project [ecotippingpoints.org]