It is estimated that by the year 2025, today’s world population of 5.8 billion will have risen to 8.3 billion, with most of the increase coming in developing countries.
Inakadiriwa kwamba kufikia mwaka wa 2025, idadi ya watu duniani ya leo ya bilioni 5.8 itakuwa imeongezeka hadi bilioni 8.3, na ongezeko kubwa likija katika nchi zinazoendelea.