U.S. high court topples controversial mercury pollution regulations

by Marianne Lavelle,  Science Insider

Long-delayed action on the health risks of mercury produced by U.S. coal power plants will have to wait even longer, as the Supreme Court decided today that federal authorities failed to properly weigh the benefits of regulation against the costs.

Justice Antonin Scalia, writing the opinion for a 5-4 majority, said that the U.S. Environmental Protection Agency (EPA) acted unreasonably when it deemed cost “irrelevant” to the question of whether or not to regulate hazardous power plant pollution.

The decision blocks enforcement of rules that just went into effect this past April after decades of study, lawsuits, and political wrangling through four administrations.  Read the entire story..


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