Environmental Protection Agency Affirms Greenhouse Gas Emissions Endangerment Finding

WASHINGTON, D.C. - (Mealey's) The U.S. Environmental Protection Agency on July 29 denied 10 petitions challenging its Dec. 7 determination that greenhouse gas emissions are a threat to public health and must be regulated under the Clean Air Act. The finding allows the federal government to regulate...

Federal Government Urges Supreme Court Dismissal Of Carbon Dioxide Lawsuits

WASHINGTON, D.C. - (Mealey's) The federal government on Aug. 25 asked the U.S. Supreme Court to vacate a lower court decision to reinstate two lawsuits seeking to limit carbon dioxide emissions, arguing that new greenhouse gas regulations have displaced public nuisance cause of actions ( American...

Composition of diesel exhaust varies with engine loading, producing differential health impact characteristics from the emissions

As noted in several prior posts, the study of the impact on diesel exhaust has focused on the PM10 and PM 2.5 profiles of the emissions. Recently, researchers argued that this view is too simplistic, and present an interesting study in support of their view. The researchers analyzed the composition...