A state judge in Montana ruled on Monday that young people in the state have a constitutional right to a healthful environment, finding in a landmark case that the state’s failure to consider climate change when evaluating new oil and gas projects was causing harm. The case, brought by a group of young Montana residents ranging in age from 5 to 22, is the first of its kind to go to trial in the United States. While the state has contended that Montana’s emissions are minuscule when considered against the rest of the globe’s, the court determined that a provision in the Montana Environmental Policy Act has harmed the state’s environment and the young plaintiffs, by preventing Montana from considering the climate impacts of energy projects.

You can read the full decision here.