Discovery Channel :: News, Photo Zoom :: Urine Offers Rich Phosphorus Source
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November 23, 2009 navbardiscovery.comDiscovery ChannelTLCAnimal PlanetTravel ChannelDiscovery Health ChannelDiscovery Store
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Photo Zoom

A Rich Resource?
Davies and Starr/Getty Images

A Rich Resource?
A sample cup of urine is shown. Some say more governments should require the use of toilets that separate phosphorus from human urine.

Pictures: Davies and Starr/Getty Images

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