Alabama began using nitrogen gas to carry out some executions in 2024 and conducted a first test of the method on a condemned inmate in January 2025.
January 01, 2025
high
temporal
Adoption timeline for nitrogen-gas executions in the state of Alabama.
Alabama began using nitrogen gas as an execution method in 2024.
January 01, 2024
high
temporal
State-level adoption of nitrogen hypoxia (nitrogen gas) as a method of execution.
The nitrogen hypoxia execution method uses a gas mask or similar apparatus to replace breathable air with pure nitrogen gas, causing death by lack of oxygen.
January 01, 2024
high
descriptive
Technical description of how nitrogen hypoxia is applied in executions.