.ON APRIL 2ND a gizmo being similar to a snow machine on the deck of the USS Hornet, a nonexistent aircraft-carrier tied in San Francisco Gulf, started producing a moisture of salty aerosol particles. The medical collaboration responsible for the task, the Marine Cloud Brightening (MCB) program, led due to the University of Washington, is actually checking out whether such aerosols may help to reduce weather adjustment with a type of "geoengineering". What does this condition method-- and also why is it so disputable?