His latest book, a trip through one of the most densely populated areas of the world, is also a journey through a strangely underpopulated place, inhabited only by the traces of city dwellers.

• 他最新的书，描述一个经过了世界上人口最密地带的旅行，同样也经过了奇怪的荒无人烟的地方，这些地方只有城市居民留下的痕迹。