2. Internal combustion engines create nearly as much water vapor as fuel cells. Ever seen a vehicle just starting in cold weather? That cloud of "smoke" for the first few miles they put out is water vapor. Burn anything with hydrogen (like hydrcarbons {gasoline}) and water vapor is produced.
Water vapor does not accumulate beyond natural cycling. When the air gets saturated, it rains or snows.
Water in the atmosphere is self limiting.
When there's more of it than the atmosphere can hold, it rains.
CO2 is not self limiting.
It stays in the atmosphere until some plant incorporates it,
or until it gets absorbed in the ocean.
We can add all the water to the atmosphere we'd like - it won't make any difference.
(Other than making it humid at the exact point where it's being added.)
As the air warms and cools, it absorbs more water,
then, on cooling, rejects/expels it as rain, or snow, or clouds, or fog, or dew.
No. water can just be recycled back into HHO elemental form and consumed again.
Okay, this might sound like an incredibly stupid question, and I completely understand that if we could find a good way of getting and storing hydrogen, that fuel cells are much more prefable. But I have also learnt that water vapour is the number one contributor to the green house effect (which in its self, is not dangerous), so would global temperatures also rise if our water vapour outputs rose?
