When we open the tap to drink water we don't think about the importance of this liquid on a daily basis, probably because it is omnipresent.
However, in some countries water is either rare or polluted and it needs to be filtered.
Sometimes dirty water is responsible for many deaths.
Brian Gartside has found (or should we say designed) The drinkable book. A genius idea to allow people to drink pure water by using a page as a filter.
The original article was published on Water is Life.