American Elec. Power Co. v. Connecticut, No. 10-174

Case citation

Case citation is the system used in many countries to identify the decisions in past court cases, either in special series of books called reporters or law reports, or in a 'neutral' form which will identify a decision wherever it was reported...

 (2011), was a case in which United States Supreme Court overturned 8-0 a U.S. appeals court ruling against five big power utility companies, brought by U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

s , New York City

New York City

New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

, and Land trust

Land trust

There are two distinct definitions of a land trust:* a private, nonprofit organization that, as all or part of its mission, actively works to conserve land by undertaking or assisting in land or conservation easement acquisition, or by its stewardship of such land or easements; or* an agreement...

s, attempting to force cuts in United States greenhouse gas emissions

Greenhouse gas emissions by the United States

Until 2006, the United States was the largest emitter of carbon dioxide emissions. China has been the top emitter since 2006. However both the emissions as a result of manufacturing exports and the emissions avoided by product imports are not considered...

 regarding global warming

Global warming

Global warming refers to the rising average temperature of Earth's atmosphere and oceans and its projected continuation. In the last 100 years, Earth's average surface temperature increased by about with about two thirds of the increase occurring over just the last three decades...

. The decision gives deference to reasonable interpretations of the United States Clean Air Act

Clean Air Act (United States)

The Clean Air Act is a United States federal law enacted by Congress, and signed by President Richard Nixon on December 31, 1970 to control air pollution on a national level. It requires the Environmental Protection Agency to develop and enforce regulations to protect the general public from...

 by the Environmental Protection Agency. (Scientific American) (CBS News) (USA Today) (Reuters) (MLive.com) (PBS NewsHour)