When we think about our economy, we often think about it from a supply-side perspective: We need more energy production to create more goods and services and support greater economic growth. Turns out, however, that energy efficiency plays a much bigger role in our economy than energy production. We'll talk to energy economist Skip Laitner about the historic impact of efficiency -- and how it may lay the groundwork for a new economic paradigm based on the "third industrial revolution."

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