The document discusses the growing market for sustainable building materials in the United States. It notes that by 2035, 80% of the built environment will be new or renovated, presenting an opportunity to use more sustainable materials. Additionally, the document outlines the 2030 Challenge to make all new buildings carbon neutral by 2030 in an effort to reduce carbon dioxide emissions from the building sector. It promotes Hemcrete as a sustainable building material that can help meet this challenge.