In this introductory course, we delve into the fascinating world of sustainability and circular economy practices through the lens of geosynthetics. Geosynthetics are innovative materials with vast potential to revolutionize how we approach environmental challenges and foster sustainable development. Through interactive lectures, hands-on activities, and real-world case studies, students will gain a foundational understanding of how geosynthetics contribute to creating a more sustainable and circular future. Students will be engaged in individual and group activities and will collaborate on solving problems on five modules.