did-you-kno:

According to UNICEF, 663 million people worldwide do not have access to clean drinking water. The book’s technology can successfully turn even diluted sewage into filtered water that’s comparable to the tap water in America.

How it works: Tear out a page, slide it into the filter box, pour in the contaminated water, and what comes out is safe to drink.

One book can provide someone with clean water for up to four years.

Each book costs pennies to produce, but funding is desperately needed to help bring it to the market.

Source