This is a phase Europe went through as well - many of the great Medieval and Renaissance cathedrals were badly damaged by the pollution of industrialization, an

This is a phase Europe went through as well - many of the great Medieval and Renaissance cathedrals were badly damaged by the pollution of industrialization, and had to be restored after pollution got under control. Luckily, that seems to have worked out (at great expense), and was a major rallying symbol for the environmentalist movement.