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Subscribe to this threadVIDEO: Water mafia fighting over the new Honda FCX Clarity
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Hooper @ Nov 18th 2007 2:28PM
But, I presume, the amount of water vapor in the atmosphere has remained more or less constant for God knows how long (see http://en.wikipedia.org/wiki/Water_cycle — I wonder how the potential adoption of hydrogen-fueled vehicles in mass quantities might affect the climate, though). On the other hand, the carbon in the carbon dioxide generated by humankind's activities comes from underground and doesn't get returned there.