Wood is back in fashion as construction material with architects and is increasingly being used to replace steel and concrete in buildings as a sustainable choice. A new type of engineered wood known as mass timber, which is stronger than wood, is being used to construct buildings. …Architects and builders are touting the material as it is supposed to be fire-resistant, strong, and ecologically relevant. …Many believe CLT is the future of construction and mass timber the new steel. Advocates of the material say that steel and concrete constructions have an emission profile of 2000 metric tons of Co2. A mass timber building replaces this carbon-emitting structure and saves the Co2 from being released in the atmosphere. …In Europe, mass timber has been in use for the past twenty years. In the U.S. it is fast gaining traction … leading to many old and new sawmills and logging companies going into business in …the U.S.