Congressional Research Service Reports - Browse

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Carbon Capture and Sequestration (CCS)
This report discusses carbon capture and sequestration (CCS), but not other types of carbon sequestration activities whereby CO2 is removed from the atmosphere and stored in vegetation, soils, or oceans.
Climate Change: Potential Regulation of Stationary Greenhouse Gas Sources Under the Clean Air Act
This report discusses the EPA's authority to control greenhouse gas (GHG) emissions from stationary sources under the Clean Air Act, and the various options that EPA could exercise.
Air Quality: EPA's 2013 Changes to the Particulate Matter (PM) Standard
This report summarizes the Environmental Protection Agency's (EPA) proposed changes to the National Ambient Air Quality Standard (NAAQS) and includes comparisons with previous (1997 and 2006) promulgated and proposed standards.
Cars, Trucks, and Climate: EPA Regulation of Greenhouse Gases from Mobile Sources
This report focuses on EPA's completed and potential actions to limit greenhouse gas (GHG) emissions from mobile sources, relying on the authorities in Title II of the Clean Air Act (CAA). We begin with a brief discussion of the petitions and court action that led to EPA's regulatory decisions.
Ozone Air Quality Standards: EPA's 2007 Proposed Changes
This report provides background on the National Ambient Air Quality Standard (NAAQS), the process used to establish them, the existing ozone standard, and EPA's proposal, as well as information regarding the potential effects of any revision to the standard.
Clean Air Act: A Summary of the Act and Its Major Requirements
This report summarizes the Clean Air Act and its major regulatory requirements. It describes the Act's major provisions and provides tables listing all major amendments, with the year of enactment and Public Law number, and crossreferencing sections of the Act with the major U.S. Code sections of the codified statute.
Highway Funding, the States, and New Air Quality Standards
No Description Available.
Greenhouse Gas Reduction: Cap-and-Trade Bills in the 110th Congress
This report discusses the Cap-and-Trade Bills in the 110th Congress which are meant to advance market-based greenhouse gas reduction programs, similar to the 1990 Clean Air Act Amendments. The report presents a side-by-side comparison of the major provision in each of the bills and includes a glossary of common terms.
Costs and Benefits of Clear Skies: EPA's Analysis of Multi-Pollutant Clean Air Bills
This report examines EPA's analysis and adjusts some of its assumptions to reflect current regulations. The most important adjustment is the choice of baseline. The agency’s analysis assumes as a baseline that, in the absence of new federal legislation, EPA and the states will take no additional action to control SO2, NOx, Hg, or CO2 emissions beyond those actions finalized by mid-2004. This baseline is put forth despite three rules recently promulgated by EPA that limit SO2, NOx, and Hg emissions on a timeframe similar to that proposed by the Clear Skies legislation.
Clean Air and New Source Review: Defining Routine Maintenance
The Environmental Protection Agency (EPA) final rule on clarifying the definition of routine maintenance under its New Source Review (NSR) process exempts industrial facilities from undergoing NSR if they are replacing safety, reliability, and efficiency rated components with new, functionally equivalent equipment and if the cost of the replacement components is under 20 percent of the replacement value of the process unit.
Market-Based Greenhouse Gas Control: Selected Proposals in the 111th Congress
This report discusses several legislative proposals that would control greenhouse gas (GHG) emissions. The proposals offered to date would employ market-based approaches--either a cap-and-trade or carbon tax system, or some combination thereof--to reduce GHG emissions.
Federal Agency Actions Following the Supreme Court's Climate Change Decision: A Chronology
This report presents a chronology of major federal agency actions taken in the wake of Massachusetts v. EPA. In Massachusetts v. EPA, the Court held that greenhouse gases (GHGs), widely viewed as contributing to climate change, constitute "air pollutants" as that phrase is used in the Clean Air Act (CAA). As a result, said the Court, the U.S. Environmental Protection Agency (EPA) had improperly denied a petition seeking CAA regulation of GHGs from new motor vehicles by saying the agency lacked authority over such emissions.
Aviation and Climate Change
This report provides background on aviation emissions and the factors affecting them; it discusses the tools available to control emissions, including existing authority under the Clean Air Act and proposed economy-wide cap-and-trade legislation; and it examines international regulatory developments that may affect U.S. commercial airlines.
Aviation and Climate Change
This report provides background on aviation emissions and the factors affecting them; it discusses the tools available to control emissions, including existing authority under the Clean Air Act and proposed economy-wide cap-and-trade legislation; and it examines international regulatory developments that may affect U.S. commercial airlines.
Federal Agency Actions Following the Supreme Court’s Climate Change Decision: A Chronology
This report presents a chronology of major federal agency actions related to environmental concerns following the decision of Massachusetts v. EPA; it particularly looks at actions of the Environmental Protection Agency (EPA). In Massachusetts v. EPA, the Supreme Court held that greenhouse gases (GHGs), widely viewed as contributing to climate change, constitute “air pollutants” as that phrase is used in the Clean Air Act (CAA).
Estimates of Carbon Mitigation Potential from Agricultural and Forestry Activities
The report is organized into three parts. The first provides a brief overview of the role of the agriculture and forestry sectors within the broader climate change debate, describing available estimates of current GHG emissions and carbon sequestration in the farm and forestry sectors. The second describes available data and information on the potential for carbon storage (tonnage) by type of farming and forestry activity, and presents available estimates of the carbon sequestration potential in these sectors. The final part discusses some of the limitations of available estimates of GHG mitigation potential in the agriculture and forestry sectors, focusing on recent policy and market changes and other types of modeling uncertainties that could limit the accuracy of available mitigation projections.
Estimates of Carbon Mitigation Potential from Agricultural and Forestry Activities
This report presents a brief overview of the available estimates from U.S. Department of Agriculture (USDA) and U.S. Environmental Protection Agency (EPA) carbon mitigation studies, and then discusses some of the limitations of the available data and modeling results. It includes informationa bout estimated current emissions and sequestration, estimated addtional potential sequestration, limitations of mitigation potential estimates, and considerations for Congress.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, that would produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
From an environmental quality standpoint, much of the interest in animal agriculture has focused on impacts on water resources, because animal waste, if not properly managed, can harm water quality through surface runoff, direct discharges, spills, and leaching into soil and groundwater. A more recent issue is the contribution of emissions from animal feeding operations (AFO), enterprises where animals are raised in confinement, to air pollution. AFOs can affect air quality through emissions of gases such as ammonia and hydrogen sulfide, particulate matter, volatile organic compounds, hazardous air pollutants, and odor. These pollutants and compounds have a number of environmental and human health effects. This report reviews key issues associated with the Air Compliance Agreement.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, intended to produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Air Quality: EPA's Proposed New Ozone and Particulate Matter Standards
This report discusses the contentious issue of enforcing stringent national ambient air quality standards (NAAQS) for ozone and particulate matter (PM), the opponents of which decry as harmful to the economy. The report discusses actions undertaken by the EPA, President Clinton's support of the NAAQSs, and the criticisms of opponents.
Air Quality Standards: The Decisionmaking Process
The decisions by the Administrator of the Environmental Protection Agency (EPA) in 1997 to revise the National Ambient Air Quality Standards (NAAQS) for ozone and particulate matter refocused attention on the criteria and the process by which these decisions are made Tracing the steps of the decision pieces, this report identifies the statutory criteria established by the Congress and summarizes the administrative procedures the Agency follows in setting these standards and in reviewing them every 5 years.
Climate Change Legislation in the 109th Congress
Climate change and greenhouse gas (GHG) emissions are a continuing issue in the 109th Congress. Bills directly addressing climate change issues range from those focused primarily on climate change research to comprehensive emissions cap-and-trade programs. Additional bills focus on GHG reporting and registries, or on power plant emissions of carbon dioxide, as part of wider controls on pollutant emissions. The bills vary in their approaches to climate change issues. This report briefly discusses the basic concepts on which these bills are based and compares major provisions of the bills in each of the following categories: climate change research, technology deployment, GHG reporting and registries, and emissions reduction programs.
Climate Change Legislation in the 109th Congress
Climate change and greenhouse gas (GHG) emissions are a continuing issue in the 109th Congress. Bills directly addressing climate change issues range from those focused primarily on climate change research to comprehensive emissions cap-and-trade programs. Additional bills focus on GHG reporting and registries, or on power plant emissions of carbon dioxide, as part of wider controls on pollutant emissions. The bills vary in their approaches to climate change issues. This report briefly discusses the basic concepts on which these bills are based and compares major provisions of the bills in each of the following categories: climate change research, technology deployment, GHG reporting and registries, and emissions reduction programs.
Climate Change Legislation in the 109th Congress
Climate change and greenhouse gas (GHG) emissions are a continuing issue in the 109th Congress. Bills directly addressing climate change issues range from those focused primarily on climate change research to comprehensive emissions cap-and-trade programs. Additional bills focus on GHG reporting and registries, or on power plant emissions of carbon dioxide, as part of wider controls on pollutant emissions. The bills vary in their approaches to climate change issues. This report briefly discusses the basic concepts on which these bills are based and compares major provisions of the bills in each of the following categories: climate change research, technology deployment, GHG reporting and registries, and emissions reduction programs.
Stratospheric Ozone Depletion: Implementation Issues
No Description Available.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, that would produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, that would produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
From an environmental quality standpoint, much of the interest in animal agriculture has focused on impacts on water resources, because animal waste, if not properly managed, can harm water quality through surface runoff, direct discharges, spills, and leaching into soil and groundwater. A more recent issue is the contribution of emissions from animal feeding operations (AFO), enterprises where animals are raised in confinement, to air pollution. AFOs can affect air quality through emissions of gases such as ammonia and hydrogen sulfide, particulate matter, volatile organic compounds, hazardous air pollutants, and odor. These pollutants and compounds have a number of environmental and human health effects. This report reviews key issues associated with the Air Compliance Agreement.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, that would produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, that would produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, that would produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, intended to produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, that would produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, that would produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Stratospheric Ozone Depletion: Regulatory Issues
No Description Available.
Increasing the Efficiency of Existing Coal- Fired Power Plants
This report focuses on efficiency improvements to power plants, and discusses retrofits, technologies, and other modifications to facility operations which offer the potential to improve power plant efficiency and reduce CO2 emissions.
President Obama's Climate Action Plan
This report discusses President Obama's Climate Action Plan (CAP) to reduce emissions of carbon dioxide (CO2) and other greenhouse gases (GHG), and to encourage adaptation to expected climate change.
Climate Change and Existing Law: A Survey of Legal Issues Past, Present, and Future
This report discusses climate change and surveys existing law for legal issues that have arisen, or may arise in the future, on account of climate change and government responses thereto.
Climate Change and the EU Emissions Trading Scheme (ETS): Looking to 2020
This report discusses emissions standards in trade in European Union (EU).
Climate Change and Existing Law: A Survey of Legal Issues Past, Present, and Future
This report surveys existing law for legal issues that have arisen, or may arise in the future, on account of climate change and government responses thereto.
Canadian Oil Sands: Life-Cycle Assessments of Greenhouse Gas Emissions
This report discusses the basic methodology of life-cycle assessments and compares several of the publicly available studies of GHG emissions data for Canadian oil sands crudes against each other and against those of other global reference crudes.
Climate Change and Existing Law: A Survey of Legal Issues Past, Present, and Future
This report surveys existing law for legal issues that have arisen, or may arise in the future, on account of climate change and government responses thereto.
International Climate Change Financing: The Green Climate Fund (GCF)
This report discusses the Green Climate Fund (GCF), which aims to assist developing countries in their efforts to combat climate change through the provision of grants and other concessional financing for mitigation and adaptation projects, programs, policies, and activities.
Federal Agency Actions Following the Supreme Court's Climate Change Decision in Massachusetts v. EPA: A Chronology
This report presents a chronology of major federal agency actions related to environmental concerns following the decision of Massachusetts v. EPA; it particularly looks at actions of the Environmental Protection Agency (EPA). In Massachusetts v. EPA, the Supreme Court held that greenhouse gases (GHGs), widely viewed as contributing to climate change, constitute "air pollutants" as that phrase is used in the Clean Air Act (CAA).
Canadian Oil Sands: Life-Cycle Assessments of Greenhouse Gas Emissions
This report discusses the basic methodology of life-cycle assessments and compares several of the publicly-available studies of greenhouse gas (GHG) emissions data for Canadian oil sands crudes against each other and against those of other global reference crudes.
Climate Change: EU and Proposed U.S. Approaches to Carbon Leakage and WTO Implications
This report discusses climate change and issues related to carbon leakage by examining the European Union's (EU's) cap-and-trade program with a review and analysis of various EU efforts to address the concerns of energy-intensive, trade-exposed industries. Additionally, it considers similar provisions enacted or proposed by the U.S.and analyzes potential World Trade Organization (WTO) implications in relation to U.S. trade agreements.
Is Biopower Carbon Neutral?
This report discusses some factors taken into account when considering whether biopower is carbon neutral. It does not discuss carbon accounting for other bioenergy pathways.
Ozone Air Quality Standards: EPA's Proposed January 2010 Revisions
This report discusses the standard-setting process for ambient air, the specifics of the new standard, and issues raised by the Administrator's choice; and it describes the steps that will follow EPA's promulgation.
Climate Change and the EU Emissions Trading Scheme (ETS): Looking to 2020
This report discusses the European Union's (EU) Emissions Trading Scheme (ETS) is a cornerstone of the EU's efforts to meet its obligation under the Kyoto Protocol. It covers more than 10,000 energy intensive facilities across the 27 EU Member countries.