<prompt> Translate the following text to EnglishUlimwengu unazidi kuzeeka, muda wa kuishi unazidi kuongezeka, uzazi unazidi kupungua, na gharama za kuwatunza wazee zinaweza kusababisha mfumuko wa uchumi duniani kote.  <response>: The world is aging, frets the cover story . Life expectancy is climbing, fertility is sliding, and the cost of supporting the elderly could cause a global recession. 