The U.S. Supreme Court announced that it will review portions of EPA’s greenhouse gas regulations addressing climate change. The court will hear a challenge to the D.C. Circuit ruling that upheld portions of EPA’s greenhouse gas program. The court accepted six petitions, linked with Coalition for Responsible Regulators v. EPA, which will be consolidated into one. The petitions aim to block EPA’s ability to regulate carbon dioxide emissions from stationary sources. By taking up the petitions, the justices will focus on one question: “Whether EPA permissibly determined that its regulation of greenhouse gas emissions from new motor vehicles triggered permitting requirements under the Clean Air Act for stationary sources that emit greenhouse gases.” The court is likely to hear arguments in January or February 2014.