Donald Wulfinghoff discusses energy efficiency improvements that could dramatically reduce consumption without lifestyle sacrifices. Wulfinghoff examines proven technologies and methods for increasing energy efficiency in buildings and infrastructure. The conversation explores economic benefits of efficiency investments including cost savings exceeding implementation expenses. Wulfinghoff discusses resistance to efficiency improvements despite clear financial and environmental benefits. The discussion addresses the energy waste in current systems and how much consumption could be reduced through efficiency. Wulfinghoff examines specific technologies including improved insulation, lighting, heating systems, and industrial processes. The broadcast explores why efficiency improvements are not widely implemented despite obvious advantages. Wulfinghoff discusses the potential for efficiency to reduce energy demand more than any alternative energy source. The conversation addresses the political and economic barriers preventing efficiency from being prioritized. Wulfinghoff examines what energy efficiency reveals about waste in current systems and opportunities for improvement.