.ON APRIL 2ND a device looking like a snowfall device on the deck of the USS Hornet, a nonexistent aircraft-carrier tied in San Francisco Gulf, began producing a haze of salty spray fragments. The scientific partnership responsible for the project, the Marine Cloud Whitening (MCB) programme, led by the Educational institution of Washington, is actually checking out whether such aerosols might assist to decrease climate improvement by means of a kind of "geoengineering". What does this term method-- as well as why is it so questionable?