So I found this link out there on the fabulous intertubes. Teh r0><or (that's translated into "the roxor", [that translates one layer further into "That Rocks!"]).  But I digress...where was I again?

Oh yeah space shuttle.

Well being the proud owner of a 3rd grader and a 1st grader the first section of the document regarding the Space Shuttle that I drilled into was the how-do-they-go-to-the-bathroom section:

http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/sts-eclss-wcl.html#sts-eclss-wcs

You're welcome.

You can go over the rest of the document here: http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/

heh:  Ironically named software platform upon which to build your Shuttle OS -

The software programs are written in HAL/S (high-order assembly language/shuttle) especially developed for real-time space flight applications.