This past weekend I attended the 4th annual symposium of the International Network on Appropriate Technology. Many presentations were made, and among them were various water purification systems. One that stood out was a solar-powered Ice Maker that turned water into clean ice, so that people in rural and remote parts of the world can refrigerate food and milk. The ability to have refrigerated food and milk also helps to generate local economies, as people can sell more of their food products (since they can store more over time) without compromising the quality or safety of the products.
However, the group is still in a fledgling phase, and I volunteered to connect the innovators through online networking.
http://atconference2008.blogspot.com/
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