This course explores how ecological life unfolds in cities through everyday experiences such as walking, commuting, gardening, consuming, and discarding. The course examines how environments are built into sidewalks, housing, parks, waterfronts, waste systems, and public infrastructure. Students will investigate how race, class, inequality, and planning shape access to clean air, green space, cooling, mobility, and environmental safety in New York City. The course is field-based and organized around observation, mapping, and public engagement. Students will conduct neighborhood walks, document environmental conditions, analyze urban infrastructures, and visit sites such as waterfronts, community gardens, and industrial corridors. Readings will introduce students to environmental justice, urban inequality, and the social life of infrastructure while encouraging them to connect large-scale ecological questions to the spaces they inhabit every day.