[jaggederest]

I wish for something like a closed loop cycle: Solar energy into electrolysis to fuel a sabatier process and feed the resulting methane into a syngas-to-gasoline process should be the standard for fuel production in the future. It's energetically expensive, but we'll never run out of water and carbon dioxide.

[cache-monet]

Not exactly a closed loop - about 30-50% of the carbon dioxide we release is absorbed into the ocean[1]. So this process might actually decrease atmospheric CO2 levels, but ocean acidification will continue to increase.

[1] http://www.gdrc.org/oceans/fsheet-02.html

[jaggederest]

Carbonic acid in the ocean is in equilibrium with the atmosphere, so if you knock down the ppm in the atmosphere it'll eventually affect the oceans.