Posted:

**Apr 17, 2018 12:26 pm**Alan B wrote:I have heard of Dan Browns book, but I wasn't aware of its premise. If it were possible to reduce the fertility by 2/3 (without the gory details that the film portrays), how long would it take to reduce the population to, say, two billion (assuming the death-rate stays the same)?

Edit

Perhaps a mathematics clever-clogs could do an estimation (using the latest fertility in Hermits link as the starting point)?

I missed a point here. At the moment we still have a net positive birth-rate. We need to aim for a net negative birth-rate. Although in Hermits link it shows a decline in the net birth-rate, the population is still increasing...