How to build your own solar-powered hot water heater

Take a look at this fellow in Florida that built his own solar-powered hot water heater for only $160 in materials. The construction is surprisingly straightforward.

One note: the design that he builds doesn't include anything that prevents the pipes from freezing during the winter, so it's impractical for a Pacific Northwest home like mine, but it still provides some great inspiration for simple, green construction techniques!  Read the article.