Technological expansion is redefining how we live, produce, and connect, but it also raises questions about its impact on environmental justice, social equity, and democratic governance. This compilation examines how technological innovations can contribute to sustainable development or, conversely, reproduce inequalities. Through empirical studies, conceptual frameworks, and practical proposals, it explores experiences that articulate technology and sustainability with a critical approach. The relationship between science, citizenship, and the environment thus becomes a key axis of reflection for thinking about possible futures from multiple perspectives.