Thanks, but sometimes,- or generally there are differences, which building materials are locally available. And what´s most important is: Seeing is believing, so a workshop on rocket mass ovens in the neighborhood would be great! I plan to participate in a workshop on rocket stoves soon here in Berlin.
Power corrupts. Absolute power xxxxxxxxxxxxxxxx is kinda neat.
Switching from electric heat to a rocket mass heater reduces your carbon footprint as much as parking 7 cars