To: Eric who wrote (51205 ) 5/12/2014 5:52:57 PM From: Maurice Winn Read Replies (1) | Respond to of 86355 Oh, I see, you didn't mean the roof: <Have you ever heard of "windows"? The other thing regarding Passive Solar is to design your home with the correct, optimized "roof overhang". You want to let in the sun in the wintertime and not have it come into the house in the summer. Since I live at 47 degrees N Latitude it works very well. > We have such overhang and it's great. But at night, the heat flows back out. Heavy curtains help. A serious person would have no windows, with insulation everywhere. Incoming sunlight should not be absorbed but reflected back to space. The walls outside should have angled reflectors to reflect incoming sunlight back to space, NOT windows to entrap the heat and contribute to Global Warming. But that would only be for people who actually believe that Global Warming is a problem. Heat conducted from the ground should be the heating method. To stay warm, insulated clothes should be worn, or move towards the equator. Food is enough heating fuel for a person. Don't eat mammals as they cause global warming. Fish are okay. If you are serious, you should get with the programme. Cancel your flying career and post a public apology for your father's and your sins. "We were coal miners, and sold and ran power stations, but didn't know we were doing wrong." In your case, it was aircraft engines. Like the truth, apology and reconciliation process in South Africa. People burning coal to stay warm don't burn as much fuel as the maniacs roaring around the sky. Aviators are worse than coal miners. One A380 flight to London burns a ton of kerosene per person and produces tons of CO2. They are vastly more efficient than the old Boeing 707 which burned 10 times as much fuel per person mile - [in discomfort, slowly and dangerously. Mqurice