Doomsday Prepper Tips: Water Filter | Doomsday Preppers

When you don’t have a man-made filter, you can make your own out of common materials. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world’s premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the…

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