PG&E showed off some of its clean air vehicles, which run on natural gas, during the Eco Fair held at the Lab on April 14.

Transportation was the theme of this year's event, which included everything from demonstrations of clean air cars to bike tune-ups, information about recycling, energy-efficient lamps, and home composting programs. The next issue of Currents will feature other highlights and information about the event. Photo by Roy Kaltschmidt (XBD9804-00977)