A Massive Open Online Course (MOOC) is a form of online education that makes available learning to a large number of individuals at no charge. The impact of climate change on public health has been introduced in MOOCs in various forms, for example, examining the impact of natural disasters, the increase in temperature on work productivity, and the monitoring and evaluation of health adaptation to climate change and its implications for policy. However, despite this work completed to advance understanding in both online and postgraduate education, more effort is required to provide the tools and capabilities to analyse evidence and present findings that demonstrate its impact on specific outcomes, including health and wellbeing. Although these courses are made publicly available, understanding the costs associated with their production and delivery will provide evidence to develop sustainable models for deployment of this form of citizen engagement education.