There is very little argument that the world is facing severe environmental challenges. Ongoing air and water pollution, increasing energy consumption, and the depletion of natural resources have all placed considerable stress on the capacity of our environment to support the present quality of human life in a sustainable manner. Ensuring a Sustainable Future does what few previous works have: it examines these trends' disproportionate impact on the poor and the economically viable solutions that can serve to remedy them -- solutions that simultaneously address environmental and economic probl