This desalination solar still (based on the same design bootleggers used to use) costs only $50. The article in Fast Company describes the simple, open source design, that can make a once expensive process more available to many millions who need drinkable water.
Tag Archives | appropriate technology
Bottle Lights
This brilliant idea is spreading quickly around the world. Simply fill a plastic bottle with water (add some bleach to prevent clouding), and cut a hole in the roof. And behold: an almost free 50-watt bulb. Obviously, it shines only during the day. This is especially great for the millions of houses that are too […]