Tomás Silva of Zanadesign has created this brilliant method of printing in the sand to advertise ‘Cádiz 2012’ for the Council of Cadiz in Spain. It uses no gasoline, electricity or paper. It is 100% pollution free and carbon neutral. Instead of a motor he harnesses the power of children at play to rotate the wheel and print the message in the sand. After the message is recieved it is washed away…
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