In “Hawai`i’s Ancient Past,” we delve into the islands’ rich history and evolution—spanning natural phenomena, the Polynesian settlers, and the unique ecosystem developed in isolation. Through interdisciplinary research including biology, archaeology, and linguistics, we uncover a story far different and more nuanced than previously known. The course covers the volcanic origins and unique biodiversity of Hawai`i, the deep Polynesian and Oceanic roots tracing back to Southeast Asia, and the dramatic shifts following human arrival. It examines the impacts of agriculture, invasive species, and human settlement on the islands’ ecology and culture. We explore the advanced agricultural techniques and the sophisticated societal structures of ancient Hawaiians, evidenced by the ritual architecture and cultural landscapes still visible today. Finally, we discuss the profound transformations triggered by European contact, shedding light on the overlooked aspects of Hawai`i’s ecological and social history.