Volume: 02, Issue: 10 05/19/2004 
A photomicrograph of Geobacter metallidreducens.
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Other Articles in This Issue:
Evidence of Exctinction-Causing Meteor Impact Found Off Australian Coast
Mars Exploration Rovers Continue to Succeed
Spitzer Shares the Wealth
Explore Professional Development Opportunities
NASA Plans to Put an Aura Around the Earth

It Is Dirty Work, But Someone Has to Do It

In its quest for extended human space flight, NASA has a lot of difficulties to overcome, not the least of which is what to do with all the waste the astronauts will generate. When a crew on a two-year flight to Mars can create an estimated six tons of solid waste, it's not difficult to see that this may cause a problem. Fortunately, scientists may have found a microbe that would not only solve the poop problem, but could also provide some extra electricity for the spacecraft.

Visit Science@NASA to find out more about this industrious little sewage worker:

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