Nitrogen Gas

AP : Kenneth Smith, who was put to death by Nitrogen asphyxiation in Alabama AP

Alabama Nitrogen Asphyxiation: 'Cruel Punishment, Doesn't Belong In 21st Century', EU, UN Criticises Execution

BY Outlook Web Desk

AP : US Supreme Court

Alabama Capital Punishment: Executes Convicted Murderer Using Nitrogen Gas, A First In US History

BY Associated Press