Break the Cycle of Children's Environmental Health Disparities is an annual, collaborative interdisciplinary research and training program for university students in academic tracks that focus on the impact of adverse social, economic, and environmental factors on children's health, development, and education. Each participating student is required to develop a project that focuses on preventing or reducing environment-related disorders for children who live in communities where exposure to toxic chemical hazards is compounded by insecurities and stresses related to their circumstances of social and economic disadvantage. The chapters in this book, written by the students on their projects, offer strategies to reduce children's health disparities and promote health equity for all children at the same time as they provide an asset for the students to enhance their academic or career opportunities. Furthermore, their enhanced knowledge of children's environmental health and environmental health disparities, as well as their exposure to different perspectives from the other student projects, builds the capacity of the students to become advocates for improving the health and well-being of vulnerable children.