Everyone uses the toilet -- but the kinds of toilets and the places people have to use them vary greatly around the world.
This World Toilet Day, this gallery from NBC News highlights those differences and helps illustrate the desperate need for improved sanitation in much of the developing world. As quoted from one of the captions:
The U.N. says that while there is sufficient fresh water on the planet for everyone, "bad economics and poor infrastructure" mean that every year millions of people - most of them children - die from diseases linked to poor sanitation, unhygienic living conditions and lack of clean water supplies.
You can see the full gallery here on the nbcnews.com website.