A New York appellate court dismissed New York residents' lawsuit challenging the state's enforcement of the Regional Greenhouse Gas Initiative (RGGI), a carbon dioxide cap-and-trade…

A California court upheld the California Air Resource Board's (CARB's) authority to sell greenhouse gas allowances at auction under the California Global Warming Solutions Act of 2006,…

The Ninth Circuit held that environmental groups lacked standing to compel the Washington State Department of Ecology and other regional agencies to regulate greenhouse gas emissions from the…

The Ninth Circuit held that the California Air Resource Board (CARB) low carbon fuel standard's regulation of ethanol does not facially discriminate against out-of-state commerce. CARB treats…

A D.C. court denied a conservative publication's motion for reconsideration of the court's earlier decision denying the publication's motion to dismiss a climate scientist…

A California court issued a tentative decision upholding the California Air Resource Board's (CARB's) authority to sell greenhouse gas allowances at auction under the California Global…

The D.C. Circuit denied states' and industry groups' petitions challenging EPA rules establishing CAA permitting requirements in states that do not have implementation plans for…

A California appellate court held that the California Air Resources Board (CARB) violated the California APA and the California Environmental Quality Act (CEQA) when it adopted its Low Carbon Fuel…

The D.C. Circuit vacated an EPA rule that deferred regulation of biogenic carbon dioxide—non-fossil-fuel carbon dioxide sources such as ethanol—for three years. Although the "Deferral Rule…

A district court dismissed environmental groups' claims that BLM failed to adequately consider climate change, global warming, and greenhouse gases (GHGs) in violation of NEPA before it…