Tag Archives: cob building

10 Earth-Friendly Building Materials for Earth Day

Borrowing from Discovery.com’s 2012 top ten list of natural building materials, here are ten earth-friendly building materials, some old and some new. 1. Rock Locally sourced rock is the most earth-friendly, due to short transportation distances.  Extraction may be the most energy intense part of the life cycle of this material.  Rocks can be mortared together…