Case studies explore the Million Trees initiative in Los Angeles; the relationship of cap-and-trade policy, public health, greenhouse gas emissions and environmental justice in Southern California; Urbanization, vulnerability and environmental justice in the Brazilian cities of Rio de Janeiro, Curitiba and São Paulo, and in Antofagasta, Greater Concepción and Valparaiso in Chile; Sociospatial patterns of vulnerability in the American southwest; and Urban flood control and land use planning in Greater Taipei, Taiwan ROC.