We look at a promising new treatment that seems to slow the march of Alzheimer's. The Economist analyzes the most expensive and cheapest cities in the world. James Amin, a former leader of China's Communist Party, has died aged 96.
The Chinese leader who took over a squabbling party following the Tiananmen Square massacre surprised the world by stifling dissent, overseeing a staggering economic awakening—and occasionally breaking into song. We examine the lessons to be drawn from his legacy. After scores of failures, a new Alzheimer’s treatment shows real promise. And our annual ranking of the world’s most expensive cities.