From turkeys and LED lights to celebrating Hanukkah with solar energy, the Energy Evolution team breaks down power usage during the holidays with efficiency tips, fun facts and a cooking tutorial. The fourth episode also features answers to questions about the history behind Americans' holiday light tradition, which variety of stuffing is best and how regional grid operators prepare to accommodate soaring demand. Subscribe to Energy Evolution on Soundcloud, Apple Podcasts, Spotify and Stitcher. (Photo: AP)