Dr. d’Alessio sees science from the perspective of both a researcher and an educator. He was a research scientist at the U.S. Geological Survey, is currently a Professor at California State University, Northridge where he teaches science to university students and future teachers, was a high school Earth Science teacher in an urban public school, runs a sustainability education program in local elementary schools, and spent a year as a stay-at-home dad. He drew upon this complete picture of science from 'top to bottom' as one of the lead writers of the 2016 Science Framework for California Public Schools. In 2018, he received CSUN's university-wide Distinguished Teaching award.