.ON APRIL 2ND a gizmo looking like a snow equipment on the deck of the USS Hornet, a nonexistent aircraft-carrier moored in San Francisco Bay, began generating a mist of salted spray fragments. The medical partnership responsible for the venture, the Marine Cloud Whitening (MCB) programme, led by the Educational institution of Washington, is actually looking into whether such sprays might aid to reduce climate modification by means of a type of "geoengineering". What performs this term way-- as well as why is it therefore questionable?