UMarcin Jakubowski nonkosikazi wakhe othandekayo uKatarina bahola i-Open Building Institute (OBI) ukuthatha umthombo ovulekile ezingeni elisha ngezindlu. Inhloso yenhlangano "ukwenza izindlu ezifinyelelekayo, zemvelo zifinyeleleke kuwo wonke umuntu" futhi inike amandla abaninikhaya abanesifiso sokwakha ikhaya eliqala kabusha ngama- $ 25,000. UMarcin nethimba baqhubekile eminyakeni edlule…