.ON APRIL 2ND a contraption looking like a snow equipment on the deck of the USS Hornet, a defunct aircraft-carrier tied in San Francisco Gulf, started creating a moisture of salty aerosol fragments. The medical cooperation responsible for the venture, the Marine Cloud Brightening (MCB) programme, led due to the College of Washington, is checking out whether such aerosols could help to decrease environment adjustment with a kind of "geoengineering". What performs this term way-- as well as why is it so questionable?