If you are a hiker or camper, you may have heard about Vestergaard Frandsen’s LifeStraw. It’s a hollow stick equipped with a series of filtering membranes. You put the end of the stick in a river or puddle ─ or a toilet, for that matter ─ and suck on it. By the time the water hits your lips, it is clean and safe ─ its filters are fine enough to trap virtually all bacteria, viruses and parasites. The product has a bigger cousin called the LifeStraw Family. You hang it on your wall, pour dirty water in the top, open the tap and clean water comes out the bottom. No power or replacement parts are required. Each unit cleans about 18,000 liters of water ─ enough for a family for three years. The market cost of the unit averages out at a penny per ten liters of water purified.
Vestergaard Frandsen will distribute the LifeStraw Family for free. It is helping to sponsor a traveling campaign through the western part of Kenya set for April, 2011, that will reach 4 million families. The campaign bundles various products ─ each family that attends will get insecticide-treated bednets to protect against malaria, AIDS tests and counseling and a free LifeStraw Family.
Jeffrey Plaman on 08 Jun 13As an instructor of undergraduate and graduate students at University of California, Berkeley, and Stanford University, I created a syllabus for the benefit of other college/university level instructors. I created a copy of the original syllabus for modification to use with high school students (probably juniors or seniors). I will rely on actual high school teachers to help me modify this source document. Please feel free to use, modify, and share this syllabus in your own way. Reorder the modules, add or subtract required or recommended texts and learning activities. Use your own assessment methods. If you wish to help improve this seed document, contact howard@rheingold.com and I will add you as a commenter and/or editor.
