<P> In 2006 , the United Nations stated that the rate of population growth was visibly diminishing due to the ongoing global demographic transition . If this trend continues , the rate of growth may diminish to zero by 2050 , concurrent with a world population plateau of 9.2 billion . However , this is only one of many estimates published by the UN ; in 2009 , UN population projections for 2050 ranged between around 8 billion and 10.5 billion . An alternative scenario is given by the statistician Jorgen Randers , who argues that traditional projections insufficiently take into account the downward impact of global urbanization on fertility . Randers ' `` most likely scenario '' reveals a peak in the world population in the early 2040s at about 8.1 billion people , followed by decline . Adrian Raftery , a University of Washington professor of statistics and of sociology , states that `` there 's a 70 percent probability the world population will not stabilize this century . Population , which had sort of fallen off the world 's agenda , remains a very important issue . '' </P>
<P> In 2006 , the United Nations stated that the rate of population growth was visibly diminishing due to the ongoing global demographic transition . If this trend continues , the rate of growth may diminish to zero by 2050 , concurrent with a world population plateau of 9.2 billion . However , this is only one of many estimates published by the UN ; in 2009 , UN population projections for 2050 ranged between around 8 billion and 10.5 billion . An alternative scenario is given by the statistician Jorgen Randers , who argues that traditional projections insufficiently take into account the downward impact of global urbanization on fertility . Randers ' `` most likely scenario '' reveals a peak in the world population in the early 2040s at about 8.1 billion people , followed by decline . Adrian Raftery , a University of Washington professor of statistics and of sociology , states that `` there 's a 70 percent probability the world population will not stabilize this century . Population , which had sort of fallen off the world 's agenda , remains a very important issue . '' </P>
when will the worlds population reach 8 billion
when will the worlds population reach 8 billion
2050
2050