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As reported in a paper published yesterday on PLOS One, MIT researchers ran contaminated water through a sapwood branch and found that the plant tissue successfully filtered experimental dye and actual bacteria out of the mix. The filter required only a fresh branch of white pine and some cheap plastic tubing—simplicity that could be ideal in remote villages or emergency situations.
reply to post by strongfp
if you are a hiker and get lost this could be useful, something else to know in any case