Alamar Alama Iri Siozen ya gabatar da sabon tsarin tsabtataccen tsarin tsafta wanda ke canza yanayin sararin samaniya, hannaye da iska zuwa cikin tsarin kariya na gurbataccen iska mai guba. Hanyoyin gine-gine na zamani suna da kyau don samar mana da ingantaccen ƙarfin makamashi da ta'aziyya, amma wannan yana zuwa kan farashi. Manya-manyan gine-gine masu tsafta kuma ba da gudummawa suna taimakawa wajen samar da gurɓataccen gurɓataccen iska. Ko da an tsara tsarin iska na ginin da kyau kuma an kiyaye shi da kyau, gurɓataccen cikin gida ya kasance babban matsala. Ana buƙatar sababbin hanyoyin.
