San Diego EarthWorks' annual EarthFair on April 18, 2010 in Balboa Park is the world's largest free environmental fair and Earth Day celebration. And, it's produced entirely by volunteers! There are many different jobs, and you can take on one 3-hour shift or choose to work all day. So come on out and help make a difference in the lives of 60,000 of our closest friends. Visit EarthDayWeb. org for complete information and to register on-line.