Morality's Progress is the summation of nearly three decades of work by a leading figure in environmental ethics and bioethics. The twenty-two papers here are invigoratingly diverse, but together tell a unified story about various aspects of the morality of our relationships to animals and to nature. Jamieson's direct and accessible essays will convince sceptics that thinking about these relations offers great intellectual reward, and his work here sets a challenging, controversial agenda for the future.