Chapter I--Introduction: Toward planetary stewardship. Stewardship assignments: a thought experiment -- The real world: only one earth. Chapter II--global-scale environmental challenges. The globalization of environmental threats -- Ten major global environmental challenges -- Acid rain and regional air pollution -- Ozone depletion -- Climate disruption -- Deforestation -- Land degradation and shortages -- Marine fisheries decline -- Toxic pollutants -- Loss of biological diversity -- Excess nitrogen -- Some connections among the issues -- Underlying drivers of deterioration. Chapter III--From Stockholm to Johannesburg: first attempt at global environmental governance. The Stockholm Conference: setting out -- Stockholm to Rio: across new frontiers -- The earth summit: a peak on the journey -- Rio to Johannesburg: a zigzag trail -- The Johannesburg summit: too steep an incline -- Concluding observations. Chapter IV--Environmental accord: treaties and international environmental law. International law and collective action: the basics-- The ozone layer protection regime: the little engine that could -- Problem identification, fact finding, and agenda setting -- Negotiation, bargaining, and agreement on actions to be taken -- Formal adoption -- Implementation, monitoring, assessment, and strengthening -- Treaty regimes and the other major global environmental threats -- Will climate protection be the next success? Chapter V--Key actors, expanding roles: the United Nations, international organizations, and civil society. The United Nations system -- Development assistance and the environment -- The World Trade Organization, environment, trade, and globalization -- Civil society and governance without governments. Chapter VI--Paths to the future: a second attempt at global environmental governance?. Reformist visions: how to make the system work better -- Cooperative environment -- Capacity -- Concern -- Reformist visions: major innovations -- A world. environment organization -- Opening the system to the public -- Global issue networks -- Alternative visions: how to change the system -- Addressing the underlying drivers: beyond dealing with symptoms -- Natural capitalism: beyond blinkered capitalism -- Ecological economics: beyond neoclassical economics -- Local control: beyond corporate globalization -- Bottom-up change: beyond global governance. The authors tell the story of how the community of nations, nongovernmental organizations, scientists, and multinational corporations have created an unprecedented set of laws and institutions intended to help solve large-scale environmental problems.