Arthur Rosenfeld (1926 - 2017), the Godfather of Energy Efficiency

Art Rosenfeld, a California physicist whose extraordinary contributions to sustainable development led him to be known as the Godfather of Energy Efficiency, died Jan. 27, 2017, in Berkeley, California, according to multiple news sources. He was 90. Rosenfeld's death wasn't publicized until this week, however. Rosenfeld created new standards for energy efficiency in California that later became internationally known. His work contributed to the development of compact fluorescent lamps and other low-energy electric lights, energy efficient refrigerators, and windows injected with argon gas to prevent heat from escaping one's house.