You’ve probably noticed it a hundred times but never really thought about it– those two buttons on your toilet flush. One small, one big. You press whichever feels right in the moment, without ...

You see it daily, several times, but never really think about why it’s like that. The buttons on your toilet flush—why are there two buttons, a big one and a small one? Are you pressing the correct ...

When flushed, commercial toilets can spew airborne particles at speeds of up to 6.6 feet per second. John Crimaldi et al. / University of Colorado Boulder With the press of a handle and a powerful ...

If you are parent to a child under 7 you’ll be well aware of the need for the pre-flush. You’ll be a pro at intercepting guests on their way to the loo so you can check your DC hasn’t left them a gift ...