Bottle makes dirty water drinkable

What a great invention:

He said: "Something had to be done. It took me a little while and some very frustrating prototypes but eventually I did it."

Conventional filters can cut out bacteria measuring more than 200 nanometres but not viruses, which typically are 25 nanometres long.

Mr Pritchard's bottle can clean up any water - including faecal matter - using a filter that cuts out anything longer than 15 nanometres, which means that viruses can be filtered out without the use of chemicals.

http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2007/09/12/nwater112.xml

Now if only they could make something similar for adware infested software...