TEXAS (KGO) -- Nasa is pledging $30,000 to anyone who can help find a solution to a real problem related to space travel.
Astronaut Richard Mastracchio explains the Space Poop Challenge in a Vimeo video.
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Participants have until Dec. 20 to offer their ideas on how to deal with common bodily functions that pose problems for astronauts.
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This is an undated image of a spacecraft. (KGO-TV)