This is the Holy Grail ruling we've been after, especially with oil and gas. It calls into question the legality of oil and gas leasing that's happening everywhere.

Jeremy Nichols of the WildEarth Guardians, the plaintiff in a court case over oil and gas drilling in Wyoming. The judge blocked the drilling in a ruling more expansive than others on this issue: "Given the national, cumulative nature of climate change, considering each individual drilling project in a vacuum deprives the agency and the public of the context necessary to evaluate oil and gas drilling on federal land."