Brian Liebel is the Chief Programs Officer at DarkSky International, formerly known as the International Dark-Sky Association. Throughout his 35-year career, Brian has dedicated his efforts to balancing the human need for light with environmental concerns, and always with a reliance on solid science. His career in lighting started with the University of Kansas Architectural Engineering program, after which he moved to the San Francisco Bay Area and became an established lighting designer, electrical engineer, lighting educator, and energy conservation advocate. Brian’s private consultation practice kept him independent while receiving significant appointments, such as the Lighting Program Director at the Pacific Energy Center and the Principal Investigator for the U.S. Department of Energy in assessing the effects of light spectrum on vision. Prior to joining DarkSky International, Brian was the Director of Standards and Research at the IES for six years.