What is your problem, Chronos?

[DSeid]

OMG. I asked a question about this 24 years ago … which was answered, eventually, quite satisfactorily.

When water is the pollution.

Fuel cells produce nothing but energy and water vapor, right. But this is new water, not water that has been part of the water cycle since … whenever. Doesn’t the addition of massive amounts of new water vapor to the system do something to the ecosystem? I would think it would produce more cloud cover. Would this increase global warming, or block sun energy and result in cooling, or would the effects neutralize? Turns out that regular old internal combustion engines also make new water vapor, i…