That vacuum effect is going on continuously while the plane is in the air, says Jones – we just don’t hear it until we open the valve and connect the toilet to the system. When the plane is on the ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Composting toilets are gaining popularity for a good reason—they ...

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 ...

How do you connect to the internet while barreling through the sky at 500 miles per hour? How can you brew hot food and drinks at high altitude? And most important of all, how does a toilet work at 40 ...