Wood filters, hot rocks, and seven other ways to purify water in the wild

A method for every occasion and level of emergency. (Tim MacWelch/) This story was originally featured on Outdoor Life. One of the top survival priorities in an emergency is to find and disinfect enough drinking water to supply your needs. Whether your crisis situation is unfolding in the desert after becoming lost or in your […]

Ancient Maya built sophisticated water filters

UC researchers Nicholas Dunning, left, Vernon Scarborough and David Lentz set up equipment to take sediment samples during their field research at Tikal. Credit: Liwy Grazioso Sierra Ancient Maya in the once-bustling city of Tikal built sophisticated water filters using natural materials they imported from miles away, according to the University of Cincinnati. UC researchers […]