In an earlier post we covered the fully recyclable children's book from Argentina that could grow into a tree, now we have the story of the book that can clean unsafe drinking water.
Though not a children's book, it could be, it is still an incredible and noteworthy development from which millions of children could benefit. It is still in its developmental stages, but the technology has been proved to work. The pages are impregnated with nanoparticles of silver and copper.
When a page is used to filter dirty drinking water the nanoparticles kill off the dangerous bacteria, trials at 25 contaminated sites in Ghana, South Africa and Bangladesh saw 99% of the bacteria removed.
One page could filter one hundred litres of water, a book could filter a person's water needs for four years!
See more about this technology developed by Dr Teri Dankovich at http://www.bbc.co.uk/news/science-environment-33954763