<prompt> Translate the following text to EnglishSheria mpya ya hewa safi ya karne ya 21 lazima ijengwe juu ya kanuni hii ya msingi - kisasa na teknolojia bora itamaanisha njia mpya ya maendeleo ya kufikia malengo haya ya muda mrefu ya mazingira.  <response>: A new Clean Air Act for the 21st century must build on this founding principle -modernization and better technology will mean a progressive new way to accomplish these long-standing environmental goals. 