Since the dawn of civilization, new technologies-from the plow to the locomotive to the computer-have transformed human lives. These changes have often been for the better, but occasionally also for the worse. No matter what consequence, these changes have always been irrevocable and pervasive....

The rapid pace of economic growth in China has been unprecedented since the start of economic reforms in late 1970s. It has delivered higher incomes and made the largest single contribution to global poverty reduction. Measured by international poverty lines, from 1978-2004, the absolute poor...