This document provides an overview of green building technology. It defines green building as environmentally-conscious construction that uses less energy, water and resources and creates less waste. Green building technology covers features like geothermal heating and energy-efficient appliances. The key objectives of green building include protecting occupant health, improving productivity, conserving resources, reducing carbon footprint, and achieving better indoor air quality. Materials selection is an important part of green building, focusing on criteria like resource efficiency, energy efficiency, affordability, recyclability, and water conservation. Green buildings provide benefits like reduced costs, energy conservation, improved health, and increased productivity.