Every few years during the rainy season, certain neighborhoods of San Francisco flood. Why? Here's our comics explainer.

Sewers are the hidden backbone of modern cities. In this video, I explain how sewer systems work, why they’re so important, and how engineers designed them to keep waste out of sight - and out of mind ...

At the end of July 2023, 3.07 inches of rain fell on Boston in a single day. The city’s sewer systems were overwhelmed, resulting in a discharge of sewage into Boston Harbor that prompted a public ...

1.-2. Working in sewers presents a myriad of technological challenges. There are currently no robots that can work without direct human intervention and last for a long time in such a featureless, ...