Thomas Edison, who invented the light bulb in 1879, stands in his favorite place, his laboratory in New Jersey. The image is among the historical artifacts from the Thomas Alva Edison Laboratory in West Orange, New Jersey, that are part of Energy Past & Present: Creating, Consuming, & Conserving, an exhibit about energy and electric conservation at the Lehigh Valley Heritage Museum in Alentown. Photo courtesy of the National Park Service. ////FEATURES////