I remember coming across this when it was published as a National Geographic article. I think it's an interesting comparison as compared to Ehrlich's "Population Bomb" idea, as well as to the various population predictions made by scientists throughout the years.
The article dicusses in further depth the demographic transitions occuring around the world, and is an interesting read for anyone intersted in human population dynamics.
Here's the link if you're intersted:
And if you're short on time, there's a video summary here: