World Toilet Day — that's today, Nov. 19 — is no joke. (Although clearly the German toilets pictured above have a sense of humor.) This day in honor of the loo was created by Jack Sim, a Singapore ...

Using toilets is not always intuitive. That's when a sign or two can be helpful — and sometimes hilarity-inducing. The world is in a transitional toilet state. Bathroom innovators are working on ways ...