In this textbook chapter, students are introduced to the national and international efforts to mitigate climate change. Students examine transcripts of a congressional hearing on climate change, and consider the importance of enacting climate change mitigation policies at the federal level versus individual or community action. The resource includes a classroom investigation, discussion questions, links to current news articles, and a suite of pre and post unit assessments. A teacher's guide supports classroom use. This is the ninth chapter in the unit, Climate Change, which addresses the question of how human activities are changing Earth's climate. The resource is part of Global Systems Science (GSS), an interdisciplinary course for high school students that emphasizes how scientists from a wide variety of fields work together to understand significant problems of global impact.