Because sanitation has so many effects across all aspects of development - it affects education, it affects health, it affects maternal mortality and infant mortality, it affects labor - it's all these things, so it becomes a political football. Nobody has full responsibility.

I went down to the sewers in London and looked at a campaigning group in London called RATS, Rowers Against Thames Sewage, and I went to Sewage School and hung out with kids learning to make sewage soup and how to clean sewage. And it was great - really good fun.

The Environmental Control and Life Support System (ECLSS), which controls the living environment on shuttles and on the International Space Station, doesn't have the luxury of disposal: discharging trash into space has long been judged a bad idea.

Felixstowe, the United Kingdom's largest port, stops work only for Christmas Day and for crane-toppling Force 9 gales.

Felixstowe, the United Kingdom's largest port, stops work only for Christmas Day and for crane-toppling Force 9 gales.