This document discusses green building and indoor environmental quality. It defines green buildings as those designed to reduce environmental impact and provide healthier, more efficient affordable housing. Elements of green building include achieving water and energy efficiency through techniques like passive solar design and using locally available renewable sources. Indoor environmental quality incorporates conditions like air quality, lighting and thermal comfort, and their effects on occupants. Research shows physical and mental performance decreases with temperatures over 26°C. Eco-friendly building materials mentioned include ashcrete, timbercrete, straw bales, cork and bamboo. The document also discusses waste reduction through recycling and reuse.