HabitatMap is an environmental health justice organization that leverages community knowledge to achieve just and sustainable urban places. Our online collaborative mapping and social networking tools are designed to maximize the impact of community voices on city planning, strengthen ties between organizations and activists working to build greener, greater cities and establish a shared advocacy platform for (o) alerting the public to environmental health hazards (o) holding corporations accountable for their environmental impacts (o) highlighting urban infrastructures that promote healthy living (o) identifying future opportunities for sustainable urban development; and (o) promoting policies that enhance equitable access to urban resources.