Pedzisa mutsara unotevera:
COP25 muMadrid, William McDonough uye marine ecologist Carlos Duarte vakapa Circular Carbon Economy pachiitiko neBBVA Foundation. The Circular Carbon Economy yakavakirwa pamafungiro aMcDonough kubva kuCarbon Is Not The Enemy uye inovavarira kushanda sechimiro chekugadzira nekuronga masisitimu anoshanda ekugadzirisa kabhoni.