AN ACT TO DECLARE CERTAIN LEGISLATIVE FINDINGS RELATING TO GEOENGINEERING; TO AMEND SECTION 49-17-5, MISSISSIPPI CODE OF 1972, TO DEFINE THE TERM "GEOENGINEERING" WITHIN THE MISSISSIPPI AIR AND WATER POLLUTION CONTROL LAW; TO AMEND SECTION 49-17-17, MISSISSIPPI CODE OF 1972, TO GIVE THE MISSISSIPPI AIR AND WATER POLLUTION CONTROL COMMISSION AUTHORITY TO ISSUE, MODIFY OR REVOKE ORDERS RELATED TO GEOENGINEERING; TO AMEND SECTION 49-17-19, MISSISSIPPI CODE OF 1972, TO PROHIBIT GEOENGINEERING IN MISSISSIPPI AND TO CREATE PENALTIES FOR VIOLATIONS; AND FOR RELATED PURPOSES.
SB 2418 would add a new definition of “geoengineering” to Mississippi’s Air and Water Pollution Control Law and declare legislative findings that such activities may involve intentional dispersal of chemicals into the atmosphere and may pose uncertain risks to human health and the environment. The bill states that the Mississippi Commission on Environmental Quality, acting through the Department of Environmental Quality, is responsible for regulating air and water pollution and should act to protect public health and welfare while not impeding lawful agriculture or commerce.
The bill amends existing environmental statutes to expressly prohibit geoengineering in Mississippi. It directs the commission to issue regulations banning all instances of geoengineering, authorizes the commission to issue, modify, or revoke related orders, and creates an exception for individual research projects conducted by designated state institutions of higher learning. The definition is written broadly to cover the intentional injection, release, or dispersion of chemicals, compounds, substances, or apparatus into the atmosphere for the purpose of affecting temperature, weather, or sunlight intensity, while expressly excluding normal pesticide, herbicide, and fungicide use in farming and ranching operations.
The bill also adds enforcement provisions to Section 49-17-19, making violations a felony punishable by a fine of at least $500,000, imprisonment for at least two years, or both. Each day of prohibited activity would count as a separate offense, and violators would also be subject to any other applicable Mississippi pollution laws. The act would take effect July 1, 2026.
The overall sentiment reflected in the bill text is strongly precautionary and prohibitive, with the Legislature framing geoengineering as a potential threat to public health and environmental welfare. Because there are no committee transcripts or recorded votes provided, there is no direct evidence of debate, but the bill’s caption and findings suggest support from sponsors for a categorical ban with a narrow research exception. The main point of contention likely concerns the breadth of the definition and whether the prohibition could affect legitimate scientific research, weather modification discussions, or other atmospheric activities, though the bill attempts to limit that concern by exempting designated higher-education research projects and routine agricultural chemical use.
This bill would amend Mississippi’s environmental pollution control statutes to define geoengineering as a regulated air pollution-related activity, expand the Mississippi Commission on Environmental Quality’s authority to issue orders concerning geoengineering, and require the commission to adopt regulations banning it statewide. It would also create a new felony offense and penalty structure for violations, while preserving an exception for certain research institutions and clarifying that ordinary agricultural pesticide, herbicide, and fungicide applications are not covered by the ban.
The bill appears to be driven by a strong anti-geoengineering and public-health-protection sentiment. The legislative findings emphasize uncertainty about the risks of geoengineering and the need to protect Mississippians, suggesting a cautious, preventive approach. No committee testimony or vote history is available, so there is no recorded opposition or support beyond the bill’s sponsor-driven framing.
The likely areas of contention are the scope of the definition of geoengineering, the severity of the criminal penalties, and the potential impact on scientific research or other atmospheric activities. The bill tries to address some of that by exempting designated state research institutions and by stating that normal agricultural chemical use is not prohibited, but critics could still question whether the language is too broad or whether it intrudes into federal or scientific domains.