Ecological public health addresses the complex inter-relationships between health (humans and other species), societies, and ecosystems, unpacking the myriad interconnections between the social and the ecological in the co-creation of conditions for human and ecosystem health and flourishing. In keeping with a political ecology stance, it will address issues of equity, social and environmental justice, governance, scale, meaning-making, and impact. When viewed in global perspective, these dynamics are inevitably tied up with legacies of colonialism and inequities both between and within countries in different regions of the world. In this course, we will ask: What are the key challenges for ecological public health now and into the future? How are these challenges related to historical and ongoing global forces and flows? How do people think about these challenges? What can people do about these challenges? How can we determine if such efforts are effective, while maintaining our integrity and resilience?