Dante D’Orazio, writing for The Verge:
The Inspiration Mars Foundation’s audacious plan for a private manned mission to Mars has more than a few challenges to overcome before its 2018 launch date, and it turns out the solution to one problem — dangerous cosmic rays — comes in the form of feces. The current plan calls for the two astronauts aboard the 1166-cubic-foot spacecraft to defecate into bags which would be used to line the walls of the ship (after extracting as much water as possible from the waste for reuse).
If by “reuse”, they mean drink, I sure as hell wouldn’t. Ew.
Speaking of dangerous cosmic rays, they can fry your computer too.