There are plenty of examples of technologies thought up by science fiction authors long before they were even plausible as real products – so much so that there’s a site dedicated to keeping track of them. Well, here’s another one for the list. Frank Herbert’s classic novel Dune featured a life-support system called a ‘still-suit’ which enabled its wearer to survive the ferocious arid desert climate of the planet Arrakis by recycling all bodily fluids in a closed system. It seems the NASA brainstormers thought that was a pretty elegant idea, and are basing a prototype ISS system on the same theory.