With every rinse of a sink and flush of a toilet, public health is becoming easier to track thanks to a growing practice known as wastewater monitoring or wastewater surveillance. "This is an ...

In north Denver, next to the South Platte River is a series of big pools. This is Metro Water Recovery, a treatment plant — the state’s largest according to employees. On a visit there, you can see ...

Every day, clues are released about a population's health through toilets, sinks, showers, and tubs. In wealthier countries like the United States, sewer networks collect tiny bits of feces, urine, ...