A Cheap, Promising Way to Filter Water: Through A Twig | Popular Science On March 4, 2014 By peanutgallerynhIn Uncategorized A Cheap, Promising Way to Filter Water: Through A Twig | Popular Science. hmmm. Share this: Share on X (Opens in new window) X Share on Reddit (Opens in new window) Reddit Share on Facebook (Opens in new window) Facebook Like Loading... Related