John Broome examines climate change through an invigorating new lens. As he considers the moral dimensions, he reasons through what universal standards of goodness and justice require of us. His conclusions - some as demanding as they are logical - challenge and enlighten. Eco-conscious readers may be surprised to hear they have a duty to offset all their carbon emissions, while policy makers will grapple with his analysis of what is owed to future generations. From the science of greenhouse gases to the intricate logic of cap and trade, Broome reveals how the principles that underlie everyday decision-making also provide simple and effective ideas for confronting climate change. Climate Matters is an essential contribution to one of the paramount issues of our time.