Communities worldwide are facing environmental crises such as air pollution, water shortages, climate change, and other forms of environmental change and degradation. While technical solutions for environmental change are essential, so too are solutions that consider social acceptability, value cultural relevance, and prioritize equity and social justice. Social work has a critical and urgent role in creating and implementing macrolevel social responses to environmental change. The key concepts of environmental change, environmental and ecological justice, social vulnerability, and social responses are discussed. A description of the roles and skills unique to macro social workers for this effort is given, followed by examples of macrolevel strategies and interventions. Opportunities and directions for future social work responses to a changing environment are identified.