Archaeologists in northwest China have uncovered what is believed to be the country’s only known ancient flush toilet, a ...

Curiosity spikes fast when a dig meant to reveal palace walls instead exposes plumbing that looks surprisingly familiar. A ...

A toilet flush valve controls the flow of water from the tank into the toilet bowl. It is made of a valve body, a flapper, and a chain. When you flush, the chain lifts the flapper and water flows from ...

To flush or not to flush. That was the question that designers and ecologists were asking each other this week as hundreds of people — who spend a lot of time thinking about these things — convened ...