Since ancient times, people have found ways to use the sun’s heat to stay warm or keep cool. They built homes from clay and other materials that hold heat well, and they placed them in ways that ...

The passive-house building standard relies on lots of insulation and intentional design to use as little energy as possible for heating and cooling. "Things like 'passive house' have become more ...

Passive solar architecture is a design strategy that optimizes a building’s energy efficiency and long-term sustainability. By relying on a building site’s solar orientation and climate, sustainable ...

What is passive solar energy, and how can passive solar be incorporated into energy efficient home designs? A natural builder shares tips on building an energy-efficient home. To me, the art of ...