The relationship between globalization and environmental policies presents more nuances than the popular paradigm of free trader versus self-serving protectionists, the familiar model of environmentalist battling greedy polluters, or the outmoded view of a progressive multilateral agenda juxtaposed against a parochial, inward-looking domestic one. This piece sets out a structural and analytical framework for addressing the major issues in the field -- including (1) unilateral trade-based measures to protect the environment; (2) science-based tests applied through trade agreements; (3) disciplines on foreign investment that may have a chilling effect on environmental regulation; and (4) the relationship between free trade agreements and mu...