Mainland Southeast Asia’s river basins reveal the challenge clearly. Development and Governance in an Interconnected WorldModern environmental governance was built around national sovereignty. Mainland Southeast Asia’s River Basins: Early Warnings of the AnthropoceneThe river basins of Mainland Southeast Asia illustrate this governance gap. The planet has changed; in the Anthropocene, humanity must adapt as well to safeguard the ecological foundations on which present and future generations depend. This planet is the only known home capable of sustaining life, nurturing humanity, and making civilization possible.