A 211-mile-long gravel highway proposed through the Brooks Range in Alaska will devastate the fragile arctic tundra’s landscape, biodiversity, and Native livelihood. We must stop the road—and the proposed mines it leads to—from getting built.

New regulations weaken our nation’s cornerstone environmental law. We’re still fighting.

The National Environmental Policy Act was signed into law on January 1, 1970. For 50 years, it has helped the government consider the environment in its decision-making. Here are some answers to commonly asked questions about the law, how its implemented, and what it means for outdoor enthusiasts.