He specializes in risk communication related to environmental, science, and risk issues. Professor Hart’s research investigates the role of the media in motivating and engaging the public around a variety of issues and how to create effective messages that can cross ideological divides and resonate with broad sections of the public. Hart’s research is supported by the National Science Foundation, the Environmental Protection Agency, and the U.S. Department of Agriculture. His research has been published in a number of peer reviewed journals, including Journal of Communication, Communication Research, Communication Yearbook, Science Communication, Public Understanding of Science, Medical Decision Making, Society and Natural Resources, and Environmental Communication: A Journal of Nature and Culture.