nitrogen asphyxiation

Jeff Hood, spiritual advisor to Kenneth Smith, stands for a portrait before the scheduled execution by asphyxiation using pure nitrogen of Smith, convicted for a murder-for-hire committed in 1988, at Holman Correctional Facility in Atmore, Alabama, U.S. January 25, 2024. REUTER/Micah Green
USA

Alabama completes first execution by nitrogen asphyxiation

The state has called its new protocol "the most painless and humane method of execution known to man"