Here is a great article and video about "Eco-Friendly Building Materials: Building a Better Future"

And here are some of the most sustainable and environmentally friendly building materials:

• Bamboo: Bamboo is a fast-growing renewable resource that is strong, durable, and versatile. It can be used for a variety of purposes in construction, including framing, flooring, and roofing. Bamboo also absorbs more carbon dioxide than trees, making it a great choice for reducing your building's environmental impact.
   
• Recycled steel: Steel is one of the most recycled materials in the world, and using recycled steel in construction can significantly reduce the environmental impact of your project. Recycled steel is just as strong and durable as new steel, making it a great choice for a variety of applications.
   
• Cork: Cork is a natural material that is harvested from the bark of cork oak trees. It is a renewable resource that is also recyclable. Cork is a great choice for insulation, flooring, and wall coverings. It is also naturally fire-resistant and mold-resistant.
   

   
• Straw bales: Straw bales are a low-cost and sustainable insulation material. They are made from the dried stalks of cereal crops, such as wheat or barley. Straw bales are a good insulator and can help to regulate the temperature inside your building.
   
• Reclaimed wood: Reclaimed wood is wood that has been salvaged from old buildings or other structures. It is a great way to reduce your environmental impact and give new life to old materials. Reclaimed wood can be used for a variety of purposes in construction, including flooring, framing, and furniture.
   

These are just a few of the many sustainable building materials available. When choosing building materials for your project, consider the environmental impact of the materials, as well as their cost, durability, and performance.