John Crimaldi is a professor of civil, environmental and architectural engineering at the University of Colorado, Boulder. Every time you flush a toilet, it releases plumes of tiny water droplets into ...

This summer, in Boulder, Colorado, John Crimaldi and his team of civil and environmental engineers gathered around a toilet — for science. They positioned a laser to beam green light above the lidless ...

File this one under “Studies We Wish Had Let Us Remain Ignorant.” Scientists at the University of Arizona decided to investigate whether closing the toilet lid before flushing reduces ...

A study found that the floor and walls around the toilet could still get contaminated with viruses from the toilet bowl even when the lid is down during flushing. (Photo: Getty) Will shutting the ...

Engineers at the University of Colorado Boulder have confirmed what the germ-phobic among us have long suspected: The flush of a commercial toilet releases a Vesuvius-like cloud of tiny droplets and ...

Just like the great debate over which way the toilet paper roll goes, there is a similar spat over flushing: lid open or closed? Scientists have weighed in with their own woeful conclusion: Neither is ...

Bioaerosol emissions during toilet flushing are an often-overlooked source of potential health risks in shared public facilities. A new study published in Risk Analysis found that bioaerosol ...

Is something about to explode? Researchers from the University of Colorado showed how flushing a toilet can generate a volcano or geyser like plume of particles, including ones that can hang in the ...