This book offers a theological reflection on the praxis of struggle for human and ecological liberation. It critically appropriates the framework of the emerging ecological theology of liberation, which expands the notion of the preferential option for the poor--privileging those who suffer from class oppression, racial discrimination, sexist ideologies, and ecological exploitation. With the analytical mediation of the social and ecological sciences, this book investigates the oppressive ideologies that produce poverty and the ecological crisis. It maps out existing advocacies that may awaken a sense of solidarity and serve as embers of hope for a sustainable world.