First U.S. execution by nitrogen gas would cause "painful and humiliating death," U.N. experts warn - CBS News
- First U.S. execution by nitrogen gas would cause "painful and humiliating death," U.N. experts warn CBS News
- UN ‘alarmed’ at Alabama’s nitrogen execution of Kenneth Eugene Smith: ‘Cruel, inhuman ... torture’ AL.com
- UN experts alarmed by Alabama plan to kill prisoner using untried gas method The Guardian
- Execution time set for inmate who elected to die by nitrogen gas WSFA
- Nitrogen Hypoxia: Imminent Alabama Gas Execution 'Untested' And Potentially 'Torture,' UN Experts Warn Forbes