prohibiting solar radiation modification, weather modification, and other polluting atmospheric interventions.

HB 1618 prohibits solar radiation modification (SRM), weather modification, and other atmospheric interventions that release pollutants in New Hampshire. It directly affects any entity - government agencies, researchers, or private groups - conducting such activities within the state. The bill replaces existing law to ban these interventions, requires enforcement by county sheriffs or deputized citizens, and establishes penalties for violations. The key change is banning experiments involving chemical releases (like cloud seeding) that could harm air quality, health, or ecosystems, as outlined in the "Clean Air Preservation Act."