Join Dick Peterson, an environmental and green-building consultant, for a rainwater harvesting demonstration at the Expo. Mr. Peterson will demonstrate building a rain barrel from a recycled, food-grade 55-gallon plastic drum. Using the new “magic plug”, you can use the cheaper sealed barrels, because everything connects from the outside. No removable top necessary. You are welcome to bring a lawn chair for the outdoor events. For more information, see www.dickpeterson.com.