The U.S. regulatory environment is changing rapidly, at the same time that visible and profound impacts of climate change are already being felt throughout the world, and enormous, potentially existential threats loom in the not-so-distant future. What does it mean to think about and practice environmental law in this setting? In this Article, members of the Environmental Law Collaborative have taken on the question of whether environmental law as we currently know it is up to the job of addressing these threats, and, if not, what the path forward should be.