JBS Haldane and Edwin Martin Case (pictured) experimented on themselves to study the effects of nitrogen narcosis, in which the gas becomes a powerful narcotic drug under increased pressure.

To Help the Allied War Effort, These Scientists Got Drunk on Nitrogen

During World War II, British researchers conducted tests on themselves to gauge how submariners' brains would function at extreme depths

The HL Hunley pressed its torpedo against the side of the USS Housatonic until it detonated.

The New Explosive Theory About What Doomed the Crew of the 'Hunley'

A blast-injury expert takes aim at the mystery of what sank the most famous—and lethal—submarine of the Civil War

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