The time has come to build as energy efficient as possible which will in turn reduce our energy consumption. There are products available to help achieve this goal of sustainability, such as radiant heating, tankless hot water tanks, windows, insulation, roofing, bamboo flooring, recycled products right down to earth friendly interior paints with no VOCs. Below are several websites we have found useful.

Radiant Heating view
Andersen Windows view
Tankless Hot Water Heaters view
U.S. Department of Energy- Energy Efficiency and Renewable Energy view
Energystar view