World Toilet Day came and went a month ago but the need for basic sanitation never passes so it's still worth mentioning. The post is quite thorough with a good rundown on the topic as well as convenient links to an array of toilet topics, some not as serious as others.
The Daily Traveler Travel Blog: Travel Tips, Vacation Ideas, and Breaking News from the Editors of Cond�Nast Traveler:
"According to the WTO, some 2.5 billion people, or 40 percent of the world population, lack basic sanitation. And of the billion or so people lucky enough to have sewerage systems, only about 30 percent have their sewage 'treated in an environmentally acceptable way.' The rest flows straight into gutters, rivers, or lakes."