In an exciting green development, UL Environment, Inc. has validated the environmental claims manufacturers Serious Materials has made about its EcoRock drywall substitute building material. UL Environment is the Northbrook-based subsidiary of the 115 year-old Underwriters Laboratories and is the leading testing company of product claims and safety standards in the United States.UL’s focus is on building products and personal electronics. The company’s concentration is on validating specific and measurable claims that conform to the Federal Trade Commission’s Green Guide. The list of these products is constantly expanding as the green building demand for sustainable materials increases. UL Environment intends to create new standards for the many new sustainable building materials. The marketplace is so innovative and changing at such a rapid pace that rating companies have been unable to keep pace with the demand.