This image provided by NASA shows an interior view of the Leonardo Multi-Purpose Logistics Module attached to the Earth-facing port of the International Space Station's Harmony node. Leonardo was moved from Space Shuttle Endeavour's cargo bay and linked to the station on Monday Nov. 17, 2008 carrying two water recovery systems racks for recycling urine into potable water, a second toilet system, new gallery components, two new food warmers, a food refrigerator, an experiment freezer, combustion science experiment rack, two separate sleeping quarters and a resistance exercise device that allows station crewmembers to perform a variety of exercises.. (AP Photo/NASA)
AP
This image provided by NASA shows an interior view of the Leonardo Multi-Purpose Logistics Module attached to the Earth-facing port of the International Space Station's Harmony node. Leonardo was moved from Space Shuttle Endeavour's cargo bay and linked to the station on Monday Nov. 17, 2008 carrying two water recovery systems racks for recycling urine into potable water, a second toilet system, new gallery components, two new food warmers, a food refrigerator, an experiment freezer, combustion science experiment rack, two separate sleeping quarters and a resistance exercise device that allows station crewmembers to perform a variety of exercises.. (AP Photo/NASA)
AP
A guest sits on a ceramic toilets as she attends a press conference by various sanitation and hygiene concerns in front of Berlin's central railway station on November 19, 2008, on the occasion of World Toilet Day. The UN has established that some 38 percent of the world's population is living without adequate sanitation, and has called on governments to reduce that number by half by 2015. AFP PHOTO JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)
AFP/Getty Images
A guest sits on a ceramic toilets as she attends a press conference by various sanitation and hygiene concerns in front of Berlin's central railway station on November 19, 2008, on the occasion of World Toilet Day. The UN has established that some 38 percent of the world's population is living without adequate sanitation, and has called on governments to reduce that number by half by 2015. AFP PHOTO JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)
AFP/Getty Images
Guests sit on ceramic toilets as they attend a press conference by various sanitation and hygiene concerns in front of Berlin's central railway station on November 19, 2008, on the occasion of World Toilet Day. The UN has established that some 38 percent of the world's population is living without adequate sanitation, and has called on governments to reduce that number by half by 2015. AFP PHOTO JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)
AFP/Getty Images
Guests sit on ceramic toilets as they attend a press conference by various sanitation and hygiene concerns in front of Berlin's central railway station on November 19, 2008, on the occasion of World Toilet Day. The UN has established that some 38 percent of the world's population is living without adequate sanitation, and has called on governments to reduce that number by half by 2015. AFP PHOTO JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)
AFP/Getty Images
Participants from various sanitation and hygiene concerns address a press conference while sitting on toilets in front of Berlin's central railway station on November 19, 2008, on the occasion of World Toilet Day. The UN has established that some 38 percent of the world's population are living without adequate sanitation, and has called on governments to reduce that number by half by 2015. AFP PHOTO JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)
AFP/Getty Images
Participants from various sanitation and hygiene concerns address a press conference while sitting on toilets in front of Berlin's central railway station on November 19, 2008, on the occasion of World Toilet Day. The UN has established that some 38 percent of the world's population are living without adequate sanitation, and has called on governments to reduce that number by half by 2015. AFP PHOTO JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)
AFP/Getty Images
A toilet bowl turned artwork, part of a public exhibition in Brisbane, is seen in this handout picture made available November 19, 2008. Australian water engineers put on an art exhibition with a difference on Wednesday, with an open-air display of decorated toilet bowls, to raise awareness of the need to improve global sanitation. QUALITY FROM SOURCE REUTERS/Insanitation/Handout (AUSTRALIA). NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
Reuters
A toilet bowl turned artwork, part of a public exhibition in Brisbane, is seen in this handout picture made available November 19, 2008. Australian water engineers put on an art exhibition with a difference on Wednesday, with an open-air display of decorated toilet bowls, to raise awareness of the need to improve global sanitation. QUALITY FROM SOURCE REUTERS/Arup Corporation/Handout (AUSTRALIA). NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
Reuters