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Bill

SB 46

ENVIRONMENTAL CONTROL: To prohibit the intentional release, or dispersion of chemicals into the environment of this state with the express purpose of affecting temperature. (8/1/25)

2025 Regular Session Introduced by Beryl Amedée and 14 co-sponsors

Louisiana prohibits intentionally releasing chemicals into the environment to affect temperature, targeting geoengineering activities statewide effective August 1, 2025.

Signed by the Governor. Becomes Act No. 95.
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Bill Summary · SB 46

Legislative bill overview

SB 46 prohibits the intentional release or dispersal of chemicals into Louisiana's environment specifically intended to affect temperature. The bill became law on August 1, 2025, as Act No. 95. It targets geoengineering and weather modification activities within the state.

Why is this important

Geoengineering—deliberate large-scale intervention in Earth's climate system—remains scientifically contested and largely unregulated globally. This legislation preemptively restricts such activities at the state level, reflecting growing public concern about uncontrolled climate intervention experiments. The law could influence how companies and research institutions approach climate-related environmental projects in Louisiana.

Potential points of contention

  • Scientific ambiguity: The bill's definition of "chemicals with the express purpose of affecting temperature" may be unclear, potentially catching legitimate agricultural, industrial, or research activities (cloud seeding, cooling systems, agricultural practices) that indirectly affect local temperature.
  • Enforcement and jurisdiction challenges: Proving "express purpose" requires demonstrating intent, which is legally complex. The bill doesn't clarify enforcement mechanisms or penalties, making it difficult to know how violations will be prosecuted.
  • Federal preemption concerns: Weather modification and geoengineering may fall under federal jurisdiction. This state-level prohibition could conflict with federal research initiatives or interstate commerce, inviting legal challenges.

Compiled from official sources — confirm details with the bill’s official record.

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