The world's chemical weapons watchdog on Friday said it had once again found traces of tear gas on the frontline with Russia ...

In 1914, Morgan invented a breathing device that would later be known as the gas mask, an invention that saved lives in mines and on the battlefield. Two years later, he founded the Cleveland Call ...

Battlefield reports from World War I said soldiers exposed to chloropicrin often had to remove their gas masks to vomit. The compound, "when fired in a high concentration in a specific area ...

As the poison gas drifted over the battlefield towards them, Piper Laidlaw ripped off his gas mask and began to play his bagpipes in an attempt to rally the troops and encourage them to cross no ...

New Traces of Tear Gas Found on Ukraine Battlefield by Chemical Weapons Watchdog AMSTERDAM (Reuters) - The world's chemical weapons watchdog on Friday said it had once again found traces of tear ...