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Do-it-yourself clean energy

Here’s a story that combines three of my favorite things: clean energy, technology for developing countries, and beer.

> The beer bottles lie on a board in rows, all connected by hoses which allow cold water to flow through them and be heated by the sun.

> “I invented this for my mother. I wanted her to shower at any time more comfortably,” says Ma Yanjun, a carpenter, of Qiqiao village, Shaanxi Province.

If you want to bulid your own solar water heater, the Make: blog has details, along with links to instructions on-the-cheap solar air heaters as well.

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