Donald Worster recounts his trajectory from a Dust Bowl refugee in California to a foundational figure in environmental history. He traces his education and scholarly development, highlighting his role in establishing the field and his focus on the interaction between ecological systems and human societies. Worster situates his work within broader concerns about limits, scarcity, and global citizenship, themes that also shape his ongoing project “Facing Limits: From the Age of Abundance to the Age of Vulnerability.”