[Bigelow Brook Farm] has a cool geodesic dome ... a greener solution may have more appeal. A rocket mass heater is a combination of a rocket stove and underfloor heating. A rocket stove works ...

This is the fundamental part of a rocket stove, which sucks air in past the fuel, burns it, and exhausts it up the chimney. A few sections of pipe are welded into the chimney section to heat the ...