Chocolate chip cookies that were baked in a solar oven at the Pima College Earth Day event Wednesday April 17, 2013, in Tucson, Arizona. This was the Earth Day in April event and approximately 60 exhibitors attended including counselors and advisors from state universities. Space groups, environment, astrology, geology, hydrology and many others participated and the one day event was open to the general public from 9:00am to 1:00pm. Photo by Benjie Sanders/Arizona Daily Star