An element that I don&#x27;t understand about the carbon sequestration push is that water vapor is a <i>more potent greenhouse gas than CO2</i>, yet nobody sees condensation of water vapor out of the atmosphere as a strategy.  It has the side benefit of its &quot;waste product&quot; being <i>pure water</i>, which would be a huge benefit for arable regions lacking only water (like East of the Rockies in the USA, Australia, the Middle East &#x2F; North Africa, etc.)<p>The only such use I see is small-scale, localized cloud seeding over watersheds.