MONTGOMERY, Ala. (AP) — Alabama is preparing to use a new method of execution: nitrogen gas. The state maintains that nitrogen gas will cause unconsciousness quickly but critics have likened the never-used method of execution to human experimentation. In 2018, Alabama became the third state — along with Oklahoma and Mississippi — to authorize the use of nitrogen gas to execute prisoners. If the Alabama execution goes forward, other states may seek to start to using nitrogen gas. If the execution is blocked by the court or botched, it could halt or slow the pursuit of nitrogen gas as an alternative execution method.

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Persons: Kenneth Eugene Smith, Smith, —, gurney, general’s, Walter LaGrand, Prosecutors, Elizabeth Sennett Organizations: NIOSH, United Nations Human Rights, Veterinary Medical Association, WHO, Alabama, U.S, Supreme, Circuit Locations: MONTGOMERY, Ala, Alabama, Oklahoma, Mississippi, United States, U.S, Arizona