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.
Biochar is a charcoal produced under high temperatures using crop residues, animal manure, or any type of organic waste material. Depending on the feedstock, biochar may look similar to potting soil or to a charred substance. The combined production and use of biochar is considered a carbon-negative process, meaning that it removes carbon from the atmosphere. This report briefly describes biochar, its potential advantages and disadvantages, legislative support, and research and development activities underway in the United States.
As Congress and the Administration considered new legislation to reduce the greenhouse gas (GHG) emissions that contribute to climate change over the last year and a half (a process that has now stalled), the Environmental Protection Agency simultaneously began to exercise its existing authority under the Clean Air Act to set standards for GHG emissions. The Administration has made clear that its preference would be for Congress to address the climate issue through new legislation. Nevertheless, it is moving forward on several fronts to define how the Clean Air Act will be used and to promulgate regulations. This report covers the steps that the Administration is taking on this topic.
The diminishment of Arctic sea ice has led to increased human activities in the Arctic, and has heightened concerns about the region's future. Issues such as Arctic sovereignty claims; commercial shipping through the Arctic; Arctic oil, gas, and mineral exploration; endangered Arctic species; and increased military operations in the Arctic could cause the region in coming years to become an arena of international cooperation, competition, or conflict. This report provides an overview of Arctic-related issues for Congress, and refers readers to more in-depth CRS reports on specific Arctic-related issues.
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.
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.
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.
On April 2, 2007, the Supreme Court rendered one of its most important environmental decisions of all time. 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. This report presents a chronology of major federal agency actions, mainly by EPA, in the wake of Massachusetts v. EPA.
This report is intended as a primer on the policy issues, science, and governance of geoengineering technologies. The report will first set the policy parameters under which geoengineering technologies may be considered. It will then describe selected technologies in detail and discuss their status. The third section provides a discussion of possible approaches to governmental involvement in, and oversight of, geoengineering, including a summary of domestic and international instruments and institutions that may affect geoengineering projects.
This report discusses various cooperative international efforts to address the issue of global climate change. The two major international agreements discussed in a side-by-side comparison are the 1997 Kyoto Protocol and the 2010 Copenhagen Accord. The report discusses how many observers are hoping that initiatives carried out under the Copenhagen Accord may help bridge divides between the various tracks and economic groupings established under the Kyoto Protocol.
This report discusses recent legislative initiatives seeking to establish climate change impacts as a common law nuisance. The report explains what private and public nuisances are, the issues faced by policymakers when litigating a climate-change/nuisance suit, and also discusses five climate-chance/nuisance suits that are now or formerly active, as a basis of comparison. The report also explores arguments of those both for and against addressing the complex issue of climate change through common law suits.
This report discusses the increasing concern, within the scientific community, that rising levels of carbon dioxide in the atmosphere could detrimentally alter marine ecosystems. The report discusses how ocean acidification happens, its possible outcomes, as well as natural and human responses that could possibly limit or reduce the rate of the process.
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.
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