The document discusses green building materials that can be used instead of traditional wood products to help save forests. Some green materials mentioned include bamboo, which grows much faster than trees and can be used for floors instead of wood, newspaper used for ceiling tiles, and recycled glass and plastic used for bathroom floors and walls. Bamboo is actually a grass, not a tree, and grows back quickly after being cut. Using more sustainable materials like these in construction can help reduce deforestation and meet demand for building products.