Alabama space firm makes "green" space propulsion system | Orlando Sentinel

By Robert Block, The Write Stuff, Orlando Sentinel, Posted 10/03/09

Link: http://blogs.orlandosentinel.com/news_space_thewritestuff/2009/06/alabama-spa...

"Just when you thought sweat, urine and fetid breath were excellent sources of clean drinking water in space (as they are now on the International Space Station) it turns out that expended body moisture is also great fuel for a spacecraft."