AI Agency in Climate Emergency is a daring and topical examination of how AI is evolving from a stand-alone solution to a crucial, integrated force in the fight against climate change. In a time of increasing inequality, dwindling forests, failing infrastructure, and rising oceans, it repositions AI as a new type of agent inside ecological, political, and social systems. The book's 20 chapters and six themes cover energy decarbonization, foresight, agriculture, ecological monitoring, green finance, carbon markets, civic involvement, and behavioural change. Its fundamental strength is AI's developing agency, which includes the ability to recognize patterns that are inaccessible to humans, adjust in real time, and close the knowledge-to-action gap. Yet this is not technological determinism. It is about ethics, imagination, and governance. Justice, transparency, and solidarity—not speed—must guide AI in climate action. The book envisions AI that is inclusive, adaptive, accountable, and context-aware, offering a roadmap for scholars, professionals, and citizens in the urgent systemic shift ahead.