By Stefano Gennarini, The Witherspoon Institute - Over the next century, the flaccid geriatric cohorts of the West and exhausted Asian tigers will be no match for Africa’s burgeoning, youthful, and increasingly sophisticated population… Africa is the fastest-growing region in the world, and the only one where population is expected to more than double over the next few decades. The total population of every other region will either peak or decline by mid-century (UN demographers).