One of the strangest presents we've ever been given was a World War I gas mask, in its original cylindrical canister, presented to us in 1990 for our 10th (tin) wedding anniversary. I wondered ...

COPS are hunting for a “masked man” who reportedly released gas on trams full of passengers. Tram users were left scared ...

Alabama is the only state to use nitrogen gas for executions, and it has executed four people with the method. During the procedure, a full-face mask is used to administer pure nitrogen gas ...

Louisiana's mask is a full-face respirator similar to those often used by painters and sandblasters. Since nitrogen gas was first used to execute Kenneth Smith in Alabama, fervent debate has ...