Chicago Tribune: After several days of rain, an overnight deluge overwhelmed Chicago's underground labyrinth of aging sewers and giant tunnels Thursday, forcing a noxious mix of sewage and stormwater into local waterways and Lake Michigan.
The surge of murky, debris-strewn water so overloaded the system that sewage began to back up in basements and geysers of wastewater shot out of several sewer manholes - stomach-churning sights captured by smartphones and posted online.
To relieve the pressure, engineers...