I once posted the idea of inserting Brita filters into PVC pipes to make your own water filtration system. It just occurred to me that this could also be used to purify air. The flow would be greatly reduced but for confined areas this could be used to push a slightly purified air. It might look like a Blue Man Group bank of pipes but it would ( Read more... )

January 17, 2008 11:14 AM ( Read more... )