Twenty-five contaminated water sources in South Africa, Ghana and Bangladesh have been cleansed more than 99 percent by a bug-killing book in its first field trials.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/drinkable-book-cleanses-contaminated-water-sources-99
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/international-business-times
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-supply
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-africa
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ghana
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangladesh
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/developing-countries
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/science-and-technology