Includes bibliographical references.

Do we need the precautionary principle? -- Are there limits to growth? -- Should we be pricing ecosystem services? -- Does designating "wild lands" harm rural economies? -- Does excessive endangered species act litigation threaten species recovery, job creation and economic growth? -- Can "green" marketing claims be believed? -- Do we need research guidelines for geoengineering? -- Should we continue to rely on fossil fuels? -- Is shale gas the solution to our energy woes? -- Is renewable energy green? -- Are biofuels a reasonable substitute for fossil fuels? -- Is hydropower a sound choice for renewable energy? -- Do we have a population problem? -- Does commercial fishing have a future? -- Does the world need high-tech agriculture? -- Should society impose a moratorium on the use and release of "synthetic biology" organisms? -- Is bisphenol A a potentially serious health threat? -- Should agricultural animal wastes be exempt from the requirements of superfund legislation -- Should the United States reprocess spent nuclear fuel?