Why isn%26#039;t this simple technology more abundant. The Governments of the world tell us they dealing with debt. So why aren%26#039;t they encouraging free and alternative energy technologies such as solar cooking, Stirling engines, Joe Cell device, etc. I could go on.
i live in cold country, and burn wood, so my favourite low tech cooker is the rocket stove, twice as efficient as standard wood burner. this group show diy designs under creative commons regs;
http://www.e-geo.org/home322
