Louisiana

Prohibits the intentional release or dispersion, by burning of fuel, of chemicals into the environment of this state with the express purpose of affecting temperature. (8/1/26)

Senator Fesi returns to amend the atmospheric modification ban he authored just last year, adding seven words – “including by the burning of fuel in an aircraft engine” – to a prohibition that already covers dispersal “by any means,” making this less a legal expansion than a pointed declaration about what his law was always meant to cover.

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)

Louisiana becomes the latest state to enact a geoengineering prohibition, but uniquely accomplishes this by simultaneously repealing its existing weather modification licensing framework, effectively transitioning from regulated permission to outright ban.

Latest: Enacted as Act No. 95 of the 2025 Regular Session.

To memorialize Congress to investigate geoengineering in Louisiana.

Louisiana's legislature unanimously memorialises Congress to investigate geoengineering activities over the state, with the resolution's preamble explicitly referencing atmospheric trails "distinct from ordinary contrails" as a matter of public concern.