Rocket Mass Heaters and Natural Building

Like two jam-packed workshops in one! Come build a rocket mass heater, a super-efficient wood-burning stove that stores heat in the thermal mass of an earthen bench. Learn about the […]
Like two jam-packed workshops in one! Come build a rocket mass heater, a super-efficient wood-burning stove that stores heat in the thermal mass of an earthen bench. Learn about the […]