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Tree branches make very effective improvised water filters: MIT researchers

By Planetsave
Friday, February 28, 2014 11:11 EDT
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A very low-tech, but highly effective, new approach to water filtration has been developed by researchers at MIT. Using nothing but a small piece of sapwood, which you can find just about anywhere, you can filter out more than 99% of the dangerous microorganisms…



 
 
 
 
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