This document summarizes 5 court cases related to environmental law: 1. Massachusetts v. EPA involved Massachusetts suing the EPA for failing to regulate vehicle emissions in response to rising sea levels damaging the state's coast. 2. Sierra Club v. Morton concerned Disney's plan to build a ski resort in Sequoia National Forest, which the Sierra Club tried to stop. 3. Tennessee Valley Authority v. Hill was the first case interpreting the Endangered Species Act, and involved blocking construction of a dam to protect the snail darter fish. 4. Juliana v. United States was a youth lawsuit asserting that government actions caused environmental changes violating their constitutional rights. 5. Lu