Over on her blog, green prefab guru Michelle Kaufmann is posting all kinds of cool Earth Day activities.
One of our favorites so far is the WaterWall -- clean, attractive, not overly complicated, and very green (from the materials to the function).
To create a Waterwall, Kaufmann has taken about 50 used VOSS water bottles, filled them with water and a decorative piece of grass, and built a shelving system so that she can place them in a west facing window.
By filling a west facing window with water-filled clear bottles you can seriously reduce heat-gain in your house this summer (ie, less air conditioning). The water absorbs the heat rather than letting it pass into your home and then releases it in the evening when temperatures are not as high.
Obviously -- done poorly, this could look awful. In Kaufmann's hands it looks beautiful. It also makes great use of recycled/recylable materials.
Get the PDF instructions here.
images via blog.michellekaufmann.com