Before Thursday, no execution had ever been carried out in the U.S. using the method, and experts have repeatedly warned that nitrogen toxicity may cause the condemned person to suffer unnecessarily ...

A jury convicted Artez Hammonds in 1996 of viciously murdering and sexually assaulting Marylin Mitchell, a 22-year-old who ...

Alabama plans to carry out its first execution of the year March 12 amid weeks of protests from death penalty opponents, putting Charles Lee "Sonny" Burton to death by nitrogen gas hypoxia for a ...

One year ago, Louisiana broke a fifteen-year silence on executions by debuting nitrogen hypoxia. Officials called Jessie Hoffman Jr.’s death “flawless,” yet their own reports noted “convulsive ...

Louisiana used nitrogen gas to put a man to death Tuesday evening for a killing decades ago, marking the first time the state has used the method as it resumed executions after a 15-year hiatus.

Indiana lawmakers tried to pass legislation that would allow the state to execute people using nitrogen gas or a firing squad. What's Undetermined: The legislation failed to pass. If it had become law ...

A conservative anti-death penalty group is calling on Arkansas to forgo executions, citing concerns about a new form of capital punishment that critics describe as cruel. Known as nitrogen hypoxia, ...

Indiana lawmakers approved several changes Tuesday to a bill expanding execution methods, which is now pending a full House vote. (AP Photo/Rick Bowmer, Pool) A bill expanding Indiana’s execution ...