An icon of humanitarian product design – is a small tube that houses some pretty impressive engineering. When water is drawn through the straw, the mechanism inside it purifies water from potential pathogens like typhoid, cholera, dysentery and diarrhea – all before it reaches your lips.
http://www.lifestraw.com.au/
قشة الحياة
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Yosof A. Mohammed
Yosof_90@yahoo.com
http://UNB-facts.blogspot.com
Yosof A. Mohammed
Yosof_90@yahoo.com
http://UNB-facts.blogspot.com
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