(X post from /r/Science) Potable water in just a few easy steps. User AkatoshChiefOfThe9, in the The Wilderness Survival subreddit subreddit, 07 Mar 2014
New field-expedient filtration method using coniferous stems and/or branches shows a 99.9% E. Coli filtration rate, rejecting 100nm-sized particles User summiter, in the Advanced Discussions on Backpacking, Hiking, and Camping subreddit, 06 Mar 2014
To Clean Drinking Water, All You Need Is A Stick: Plant xylem from the sapwood of coniferous trees can remove 99.9% of bacteria from water by simple pressure-driven filtration User worldnewsbot, in the News From Around The World subreddit, 06 Mar 2014