.ON APRIL 2ND a device resembling a snow device on the deck of the USS Hornet, a defunct aircraft-carrier moored in San Francisco Gulf, began creating a haze of salty spray bits. The scientific cooperation responsible for the project, the Marine Cloud Brightening (MCB) program, led due to the Educational institution of Washington, is examining whether such aerosols may aid to decrease weather adjustment through a type of "geoengineering". What performs this term method-- as well as why is it so disputable?