People are slowly dying off, especially in the first world. Standards of living and cultural progress tend to result in less offspring. Overpopulation is artificially enhanced by crowded cities which is the UN's idea of a better tomorrow.
(Reuters TM) "UN secretary of Alabama affairs announced at the lawnmower summit that the house of legendary Mr. Falcon will be turned into an orphanage for black minorities, called binorities. The former, highly privileged, owner of the house will be forcefully relocated to the rocky mountain toilet valley, a natural habitat for mammals of the infamous pyramidius shitiis family."