It is true that the one child policy has been lifted, I think to 2 permitted. There was never a 1 child mandate, but rather a 1 child restriction. SC I don’t think the population estimates you have given are quite so high. I am leaving on a trip, so no time to research, but here is a link with lots of data.
Thanks for the link and the specifics in our discussion.
There was an estimate that the world population would top out around 2050, at 9 billion, but whomever wrote that must have been hittin’ the cookin’ sherry. Uh-oh, looks like someone started a brand new keyword...
http://www.freerepublic.com/tag/carryingcapacity/index