Reverse brew kit. New inexpensive water filtering technology.

[zarkwon]

This looks like an interesting approach to water filtering. Carbon nanotubes are proving a useful technology in a wide variety of applications.

http://www.scidev.net/en/news/nano-tea-bag-purifies-water.html

 

[Jared]

There was a paper published in January, which had some mind boggling results.

http://www.sciencedaily.com/releases/2012/01/120126100639.htm

Film prevents helium from passing through, but somehow water still evaporates through it.

 

[zarkwon]

Nobel Prize winning stuff.