All change

All future updates, resources along with the previous content from this site can now be found at

Wednesday, 30 November 2011

Dirty water filter - appropriate technology

Too much of the world lacks access to clean drinking water. Engineer Michael Pritchard did something about it -- inventing the portable Lifesaver filter, which can make the most revolting water drinkable in seconds.

An amazing demo from TEDGlobal 2009

Total Pageviews