Those concerned about protecting the environment and want to learn more about what they can do to help should celebrate Earth Day April 26 at Temple University’s Ambler campus’ 11th annual Earthfest. “When we started, there really hadn’t been anything like it in this area for quite some time, and it just fit with the campus,” said Jim Duffy, Temple EarthFest coordinator. “The campus has had an environmental mission for more than 100 years now.”