The Telegraph is using old fertility numbers, on purpose I guess... http://www.wolframalpha.com/input/?i=fertility+in+africa http://www.wolframalpha.com/input/

The Telegraph is using old fertility numbers, on purpose I guess... http://www.wolframalpha.com/input/?i=fertility+in+africa http://www.wolframalpha.com/input/?i=fertility+in+africa gives 4.7 children per female, but I wonder if the average is weighted per contry population, as the high fertility countries have a very small population, and the highly populated one being way below that (exception for Nigeria). And more interesting is the curve, falling.