Michael Hart, kam San Diegoye dә, sha shawari kәla kәla doka gomnati USbe do kәla faidatә gaswa greenhousebe dәga kәla kәnәngatәgәna dәn gәnyi ro kәla kәla kәnәngatәgәna dә ro. Shara do hydrofluorocarbons (HFCs) dә kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla kәla k