Iowa, 2015. Old people wander aimlessly through virtual ghost towns. Interstate 80 is a wasteland of derelict grain silos and abandoned farms. Buildings stand empty; most factories have shut down.
A postapocalyptic scenario? Hardly. But this grim vision must cross Governor Tom Vilsack's mind when he looks at Iowa's demographic trends. The population, 96% white, is aging at an alarming rate, with younger people moving away and those who remain too old to work the farms and factories. By 2020, 20% of Iowans will be 65 or older. And even if every high school student were to stay, the work force...