Whether a federal district court has jurisdiction under 28 U.S.C. § 1331 over nominally state-law claims seeking redress for injuries allegedly caused by the effect of transboundary greenhouse gas emissions on the global climate, on the ground that federal law necessarily and exclusively governs such claims

QUESTION PRESENTED Whether a federal district court has jurisdiction under 28 U.S.C. § 1331 over nominally state-law claims seeking redress for injuries allegedly caused by the effect of transboundary greenhouse gas emissions on the global climate, on the ground that federal law necessarily and exclusively governs such claims.