So why do so many life-forms breathe oxygen? There are probably thousands of kinds of metabolisms, or chemical processes that ...

He had kidnapped her in New Orleans after she got off work. Hoffman has been arguing that he shouldn't be executed by nitrogen gas because it violates his religious freedoms. Molly Elliott's ...

Last year, a new execution method was used in the U.S. for the first time since 1982. Here’s a look at how people have been executed throughout history.

The method of using lethal gas to carry out an execution has recently shifted from cyanide to nitrogen. Throughout history, the states have used five different execution methods: lethal ...

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.

Sanders signed the law hours before Louisiana executed its first inmate with the nitrogen gas method. Arkansas is now the fifth state to approve the method.

Louisiana on Tuesday executed a death row inmate using nitrogen gas for the first time in state history and only the fifth time in U.S. history. Death row inmate Jessie Hoffman's execution is the ...

BATON ROUGE, Louisiana -- 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 ...