"The United Nations says while the world's population is expected to increase 2.5 billion people in the next 43 years -- an increase equal to the global population of 1950 -- the inhabitants will get much older ... "One of the surprises is that population growth is most concentrated in the 60 plus age group," Hania Zlotnik, the Director of the division, told reporters in a briefing at U.N. World Headquarters in New York." ( Quoted from article)