A bill for an act relating to the prohibition of geoengineering activities, providing penalties, and including effective date provisions.

This bill prohibits most weather modification activities, including cloud seeding (using chemicals like silver iodide) and "weather engineering" that intentionally alters weather or climate. It directly affects anyone conducting such activities without legal authorization, such as private entities or individuals using aircraft or ground generators for atmospheric manipulation. The law authorizes Iowa's Department of Public Safety to issue immediate cease-and-desist orders (treated as court orders) and imposes class D felony penalties for violations, including up to 5 years in prison and fines up to $10,245 per day of violation. The bill takes effect immediately upon enactment.