Overview: Most of us take for granted the features of our modern society, from air travel and telecommunications to literacy and obesity. Yet for nearly all of its six million years of existence, human society had none of these things. While the gulf that divides us from our primitive ancestors may seem unbridgeably wide, we can glimpse much of our former lifestyle in those largely traditional societies still or recently in existence. Societies like...

"The world of fiber optic connections reaching neighborhoods, homes, and businesses will be as different from what came before as the world after the advent of electricity. The virtually unlimited amounts of data we'll be able to send and receive through fiber-optic connections will enable a degree of virtual presence that will radically transform health care, education, urban administration and services, agriculture, retail sales, and offices. Yet...