Communication and outreach efforts are essential for raising awareness about conservation issues among the general public. This paper reviews three in-person approaches (environmental education, outreach events, and field trips), as well as four types of media (print products, news media, visual media, and social media) for communicating about environmental topics, with a focus on highlighting conservation issues in Cambodia. Strengths and weaknesses are considered for each communication tool, along with lessons from a case study example of the Wonders of the Mekong, an interdisciplinary project based in Cambodia that aims to study, protect, and raise awareness about the Mekong River system. We also describe a cross-cutting initiative to share inspiring stories of local conservation practitioners that incorporates both in-person and media-based approaches. In terms of required resources and effort, there is an inherent tradeoff between the depth of in-person engagement and overall reach. While media-based approaches are valuable for reaching large numbers of people with a moderate amount of effort, in-person approaches may create a deeper connection and longer-term impact on an individual level. Ultimately, a diverse communication strategy that utilizes multiple tools to reach different audiences will be most effective. The interdisciplinary Wonders of the Mekong project has successfully communicated the values of the Mekong ecosystem to a broad audience in Cambodia using a variety of strategies, and further evaluation could help illuminate whether and how these communication approaches are shifting attitudes or promoting conservation behaviors.