We are practitioners for the City of Philadelphia with extensive experience in cases and analysis regarding the extent to which the Commonwealth of Pennsylvania has, or has not, preempted local regulation in various subjects of concern to the City. As City attorneys, our perspective is based in our role as advocates for the preservation and defense of the City’s exercise of its home rule powers. In considering the city-state relationship, many of the practical, political and cultural issues addressed in Prof. Richard C.

On March 11, 2019, the National Oceanic and Atmospheric Administration published an advance notice of proposed rulemaking to amend regulations that implement the Coastal Zone Management Act’s (CZMA’s) consistency requirement. This Article places the notice in context, focusing on the CZMA’s role in state review of offshore oil and gas development and its evolution to provide a predictable framework that balances coastal state interests with the nation’s energy needs.

The principles of “common but differentiated responsibility” (CBDR) and sustainable development play an integral role in international environmental law. However, these principles have come under fire in recent years, particularly from the global North, which has grown impatient over the lack of contribution on climate change from the emerging economies. Much effort has been expended toward the establishment of greater contribution, and the shouldering of greater responsibility from these countries.

In 1990, when the Clean Air Act (CAA) was last substantially amended, atmospheric carbon dioxide levels stood at about 350 parts per million (ppm). Now they are close to 414 ppm, and the U.S.

In recent years, the drumbeat for more expansive climate-related corporate disclosures has grown louder and more consistent within a broader swath of the financial community. This intensifying call argues for considering more climate-related information legally material under existing U.S. securities disclosure law. A key component of materiality as defined in U.S. securities law—who is a “reasonable investor”—is evolving when it comes to climate-related information. This evolution may soon impact what climate-related information courts consider material.