Nestled in the historic Barrio Hollywood neighborhood is Ricardo Manzo Elementary School. The campus, which resembles a little oasis amid the beating summer heat, is the ‘greenest elementary school on the planet.’ Manzo, which is a designated flagship school with the University of Arizona Community and School Garden Program (CSGP), is a national model for an ecological-focused curriculum. The school has served as a Biosphere 2 research site since 2018, allowing scientists and educators to study the effects between solar technology and plant and ecosystem functions.