This chapter describes the relationships among science, risk, and environmental communication to help practitioners and researchers better understand both areas of overlap and divergence. In contrast, the subfield of science communication often centers on citizens’ engagement with science debates, understanding of scientific ideas, and appreciation of scientific culture and is marked less by calls to action or crisis communication and more by evidence-based communication. In early stages, risk communication is very similar to science communication because risk communication is often practiced by scientists or experts, who generally foresee the risk much earlier than other parts of society. In this case, risk communication practices may embrace approaches to science communication or vice versa. The sample is an attempted census and contains 3,125 total articles spanning from the dates 1986 to 2018 downloaded from the Web of Science Database.