Yoda: Natural Free Water Filters — 99% Good
MIT scientists show tree branch to be effective water purifier A suitable water filter is already growing in most forests. Dirty, contaminated water is a problem for many developing nations. But water filters are relatively expensive and not something easily assembled in the shed, garage or backyard — unless, of course, the water filter is …
Continue reading “Yoda: Natural Free Water Filters — 99% Good”