Saving energy is not only responsible, it saves money, and can improve resale on existing homes.  I am a certificied EcoBroker, and have gone through an extensive course relating to energy, environmental and housing issues.   Following are some links that will give you more information.   If you feel there is something that is not listed here, but you do not see, please email me, and I will be sure to get you information as well as add it to the site! GREEN TOPIC HIGHLIGHTS: Energy Efficiency Energy-Efficient Appliances Energy-Efficient Windows Energy Recovery - Controlled Ventilation Systems Insulating for Energy Efficiency Moisture Management for Energy-Efficiency Natural Daylighting Heating and Cooling Heating - Central Location for Heating Unit Heating - High Combustion Efficiency Heating - Outside Source for Combustion Air Heating, Ventilation, and Air Conditioning Radiant Floor Heat Water Heating - Instantaneous Water Heaters   Solar Topics Passive Solar Heating Solar Electricity Building Materials Alternative Decking Materials Bamboo Flooring Building Materials Roofs - Durable, Lasting Roofing Materials Straw Bale Home Basics   Environmental Brownfields Conservation Easements Fire Safety - Choices that Fight Fire Devastation Indoor Air Quality Low VOC Paint Mold Mitigation in Homes and Buildings Radon Financing Energy Efficiency and Traditional Mortgages Energy-Efficient Mortgages