I'll quote the American poet, James Russell Lowell: "Wealth may be an excellent thing, for it means power, and it means leisure, it means liberty."
Wealth's relative, subjective. To people who live on a dollar or two a day, the ability to produce clean potable water inexpensively is wealth, and that means a greater degree of liberty to live their lives as they see fit. Engineer
Michael Pritchard's Lifesaver water purifier is a…
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