Since 1990, EPAs State and Local Climate Change Program has provided technical and financial assistance to states and localities in their efforts to address global climate change. State and local governments have the ability to affect U.S. greenhouse gas emissions significantly. They set policies and make daily investment decisions in electricity production, land use, buildings, transportation, and other key areas that provide opportunities to reduce emissions. The State and Local Climate Change Program helps states and local communities develop the ability to assess their greenhouse gas emissions and implement voluntary measures that save money, reduce greenhouse gas emissions, and improve public health and quality of life. The program encourages states and localities to use a multipollutant approach, integrating the control of criteria air pollutants and hazardous air pollutants with efforts to address greenhouse gases.