179: Penn Parmenter on Passive Solar Greenhouses
179: Penn Parmenter on Passive Solar Greenhouses. Designing greenhouses using the natural laws of nature as allies and resources. Since 1992 Penn and her husband Cord have been growing food…
179: Penn Parmenter on Passive Solar Greenhouses. Designing greenhouses using the natural laws of nature as allies and resources. Since 1992 Penn and her husband Cord have been growing food…