Editors' Summary: TSCA provides EPA with broad authority to address potential hazards posed by the manufacture, processing, distribution in commerce, use, and disposal of chemical substances and mixtures. In this first of a three-part series, the authors begin a detailed examination of the statute and regulatory program. They review the origins, objectives, and key components of TSCA, and then analyze TSCA's scope -- focusing particularly on definitional issues and exclusions.

Access to water is a fundamental climate change issue in North America and internationally. It is related to significant political, social, and ecological struggles that indigenous peoples face, and governments and courts so far have done little to address these inequities.