The articles in this special issue on New Directions in Environmental Communication in the International Journal of Environmental Research and Public Health present new research and perspectives on engaging communities impacted by Superfund sites—the hazardous waste sites that have been identified by the U.S. Environmental Protection Agency (EPA) as needing cleanup. In particular, these articles focus on the community engagement cores (CECs) that work with affected communities as part the Superfund Research Program at the National Institute of Environmental Health Sciences (NIEHS). The purpose of this closing article is to highlight important themes evident across the eight articles in the special issue. When considered together, the findings reveal important lessons learned about community engagement and environmental communication, but also reveal that much more remains to be known. Recommendations are made for how these teams can continue to practice, reflect on, and research community engagement in ways that build toward a better understanding and implementation of best practices.