
The ocean is an inhospitable place for soft, land-based human bodies. It's dark, oxygenless, and, perhaps most intractable of all, really cold. At the pressure of certain depths, neoprene suits will compress and lose their insulating power.The air in tanks also gets cold, so divers become chillier with each breath. But in the 60s, the Navy thought they had an ingenious solution to it all: nuclear power. Plutonium-238 is a byproduct of nuclear weapons production, but it also happens to be the ideal nuclear fuel for wetsuits�once you accept a nuclear-powered wetsuit is a good idea in the first place. It emits a lot of radiation, but only...