Welcome to Greece and the first ASHRAE Conference for Building Decarbonization. In recent years the effort to reduce eliminate carbon and other greenhouse gas emissions has become the number one issue for the built environment industry. This program will discuss the reasons why eliminating CO2 emissions has become important and how ASHRAE has made the commitment to make this project a priority. A brief history of the ASHRAE Task Force for Building Decarbonization will be included as a part of this discussion.