Mississippi HB552 would ban geoengineering activities within the state.
Mississippi HB552 would amend the Mississippi Code to prohibit geoengineering, defined as the intentional injection or release of chemicals into the atmosphere to affect temperature, weather, or plant intensity. The Mississippi Air and Water Pollution Control Commission would be tasked with enacting regulations to enforce this prohibition. Violators would face felony charges and substantial fines. The bill aimed to protect public health and environmental welfare, given the uncertain risks associated with geoengineering. The bill failed as of February 3, 2026.
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