It's Earth Week and (from left) Annie Randle, a North Campus Child Care Center volunteer, and Hailey Slama, an occupational science/occupational therapy student, celebrate with free smoothies made with the Engineers for a Sustainable World's solar-powered smoothie cart. Serving up the "green" treats are, from left, Madeleine Dewey, an environmental engineering student, and Catherine Connors, an electrical engineering student. Photo: Douglas Levere