James Dolan, a University of Southern California geologist, has put together a map that shows faults in the Los Angeles area butting up against one another like passengers on a sub-way at rush hour.

• 南加大地质学教授杜兰拼凑了一个地图，图上显示洛杉矶地区的断层线，像交通尖锋时段赶地铁的乘客彼此冲撞。