Astonishing change is underway in Africa, where the population is projected to nearly double to 2.5 billion over the next quarter-century — an era that will not only transform many African countries, experts say, but also radically reshape their relationship with the rest of the world.
Birthrates are tumbling in richer nations, creating anxiety about how to care for, and pay for, their aging societies. But Africa’s baby boom continues apace, fueling the youngest, fastest growing population on earth.
In 1950, Africans made up 8…
