The finding has important political implications for the management of air polution.
After a thorough scientific review ordered in 2007 by the U.S. Supreme Court, the Environmental Protection Agency issued a proposed finding Friday that greenhouse gases contribute to air pollution that may endanger public health or welfare.
Based upon the court ruling, the [...]

For the first time, the EPA is proposing to set emission limits for formaldehyde, benzene, acrolein and other air toxics from certain stationary diesel and gas-fired engines. In 2008, over 1 million of these engines generated electricity, powered equipment and operated during emergencies at industrial, agricultural and other facilities.
The new rule would only [...]