In 1993, power plants were responsible for 72 percent of all sulfur dioxide emissions in the U.S. They also contributed 33 percent of all nitrogen oxide emissions and 32 percent of all emissions of particulate matter. Of the nation's emissions of mercury, a toxic heavy metal, 23 percent came from power generation in 1993.... Moreover, powerplants represent the source of 36 percent of all [human] 1993 emissions of carbon dioxide, a dominant greenhouse gas.1

• Significance
• The "Externality" Cost of Energy Use
• Environmental Impacts of Energy Supply and Use
• Future Patterns of Energy Use and Their Environmental Impacts
• Conclusion: Economic Honesty Will Push Us Toward Renewable Energy
• APPENDIX Possible Issues for Further Research

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