NASA competition asks public what to do with astronaut poop.

Hah. Jim Lovell (Apollo 13) tells a lovely story about early bathroom engineering, involving troughs and centrifuges. The results weren't pretty. His punch line was to pull out something that looked like a clear vinyl top hat with strong adhesive on the brim ... "Millions of dollars, and this is what they came up with." He never flies commercial without it (so he claimed).