A federal judge has heard competing testimony over a request to block the nation's fourth execution using nitrogen gas.

This respirator mask is available for $20 on Amazon and is fitted with a double filtration system that can effectively remove gas, smoke, pollen, dust, and other particles in the air. Typically ...

Attorneys for an Alabama inmate scheduled to be the fourth person put to death with nitrogen gas on Wednesday asked a federal ...

Three inmates were put to death using the new method last year. The method involves placing a respirator gas mask over the person’s face to replace breathable air with pure nitrogen gas ...