Photo via University of Washington Disinfecting water with the sun is an old idea. But students at University of Washington have come up with a clever way of checking whether or not the water being disinfected is finally ready to drink. Using simple parts, their cheap set-up is a solution for safe drinking water in poor areas, and it won them a $40,000 prize…. Read the full story on TreeHugger
Read more:
Students Create Dirt Cheap Solar Solution for Disinfecting Water