.ON APRIL 2ND a gizmo resembling a snow device on the deck of the USS Hornet, an obsolete aircraft-carrier tied in San Francisco Gulf, began producing a haze of salted aerosol bits. The clinical partnership responsible for the project, the Marine Cloud Whitening (MCB) programme, led due to the College of Washington, is actually examining whether such aerosols may help to slow climate modification via a form of "geoengineering". What performs this phrase method-- as well as why is it so questionable?