In this episode, Dr. Liz Potter-Nelson and Sarah Meyers discuss the concept of sustainability, emphasizing its broad scope. They describe the Sustainability and Climate Change Across Learning Environments (SCALES) project, a curated repository of open-source educational resources. Sustainability is seen as an interdisciplinary subject that can be integrated into any field of study. The importance of continuous learning, real-world connections, and the remixing of teaching materials is also highlighted.