We first ensured that we had 95 percent nitrogen purity in the tire—the claimed limit of our nitrogen system, which generates nitrogen gas from ambient ... but the difference in loss was minimal.

HOUSTON (AP) — Louisiana is set this week to execute a man by nitrogen gas ... states have used five different execution ...

Hoffman himself testified at the hearing and requested that the state use a different method to execute him, per NOLA.com. Alabama is the only state to use nitrogen gas for executions, and it has ...

Another difference: Alabama's execution protocol allows death row inmates to choose whether to be put to death with nitrogen gas. In Louisiana, state law says the decision is up to the corrections ...

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 ...

Lethal Injection, Firing Squad and Nitrogen ... gas to put a prisoner to death. Since the U.S. Supreme Court lifted its ban on capital punishment in 1976, states have used five different execution ...