Drinkable Book (filter paper)

[Thomas Linton]

The several stories I have found are more Gee Wiz! than informative. Parasites? Still, the tech is interesting.

http://www.dnaindia.com/scitech/rep...-book-for-cleaning-contaminated-water-2115260

better: http://www.bbc.com/news/science-environment-33954763