In a significant win for climate advocacy, the Montana Supreme Court has affirmed that the state’s constitutional promise of a “clean and healthful environment” indeed encompasses a right to a stable climate. Sixteen young Montanans took on the state, arguing that its energy policies endanger their future and wellbeing, and they’ve prevailed. The ruling challenges Montana’s current stance on climate policy, highlighting the judiciary’s role in environmental protections. This decision is more than just symbolic; it sets a possible precedent for future climate litigation across the U.S.