This document discusses environmental justice and some of the key issues and principles around it. It provides definitions of environmental justice from the EPA and others that emphasize the disproportionate negative environmental impacts faced by communities of color and low-income groups. It also lists several heavily polluted areas and gives examples of organizations and policies working towards environmental justice, including the Principles of Environmental Justice and efforts by the EPA and state agencies. The document stresses that environmental justice seeks solutions by empowering disenfranchised groups and addressing problems before they occur.