The smoother the road, the faster people are likely to drive. The faster they drive, the more excited they are about getting to their destination in good, if not record time; but, also, the greater the risk of an accident that could also harm other drivers, including those driving slower and more carefully. That is an appropriate analogy for the …

These days, nobody wants to be a British supermarket. Tesco Plc, the UK’s biggest grocer, is buying wholesaler Booker Plc, while J Sainsbury Plc last year snapped up catalog retailer Argos. As for Wm Morrison Supermarkets Plc, it is building its own wholesale business using the manufacturing facilities that already make about half of its fresh foods. The only one …

Last month, Chinese President Xi Jinping directed his government to build a new city for the “millennium to come.” It would rise on rural land about 60 miles south of Beijing, guided by the principles of “ecological protection and green development.” And it would become a model for a new kind of urban expansion. It was an attractive vision. Over …