Too much of the world lacks access to clean drinking water. Engineer Michael Pritchard did something about it -- inventing the portable Lifesaver filter, which can make the most revolting water drinkable in seconds. . . . "Wow, that was 9 years ago. I wonder why I haven't seen this all over the world?" . . . I found the answer - the bottle costs $163.00 !!!!! If he really cared, he would sell them for a cost that is more affordable.